--- product_id: 257050 title: "Fitbit Flex Wireless Activity + Sleep Wristband, Slate, Small/Large" price: "20 kr" currency: DKK in_stock: false reviews_count: 13 url: https://www.desertcart.dk/products/257050-fitbit-flex-wireless-activity-sleep-wristband-slate-small-large store_origin: DK region: Denmark --- # Water-resistant to 1 ATM (sweat, rain, splash-proof) Bluetooth 4.0 wireless sync up to 20ft 7-10 days battery life per charge Fitbit Flex Wireless Activity + Sleep Wristband, Slate, Small/Large **Price:** 20 kr **Availability:** ❌ Out of Stock ## Summary > 🔥 Stay ahead of the pack with Fitbit Flex — your sleek, smart fitness sidekick! 💪 ## Quick Answers - **What is this?** Fitbit Flex Wireless Activity + Sleep Wristband, Slate, Small/Large - **How much does it cost?** 20 kr with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/257050-fitbit-flex-wireless-activity-sleep-wristband-slate-small-large) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seamless Wireless Syncing:** Effortlessly connect to 150+ leading iOS, Android & Windows devices within 20 feet—stay updated anytime, anywhere. - • **Lightweight & Stylish Comfort:** Sleek slate design in small/large sizes, crafted from durable TPU rubber with surgical-grade stainless steel clasp—wear it 24/7 without noticing. - • **All-Day Activity & Sleep Tracking:** Monitor steps, distance, calories, active minutes, and sleep quality with intuitive LED progress lights and silent vibrating alarms. - • **Motivation Meets Social Connection:** Sync with friends, set personalized goals, and compete on leaderboards to fuel your fitness journey and never miss a step. - • **Long-Lasting Battery & Easy Charging:** Up to 10 days of uninterrupted tracking on a single 1-2 hour charge keeps you motivated without daily interruptions. ## Overview The Fitbit Flex Wireless Activity + Sleep Wristband is a lightweight, water-resistant fitness tracker that wirelessly syncs via Bluetooth 4.0 to over 150 smartphones and computers. It tracks daily steps, distance, calories burned, active minutes, and sleep quality, displaying progress through LED indicators and silent vibrating alarms. With a durable TPU band and surgical-grade clasp, it offers all-day comfort and style. The device boasts a 7-10 day battery life per charge and integrates social features to motivate users through goal setting and friendly competition. ## Description Product Description Make fitness a lifestyle with Fitbit Flex—a slim, stylish device that tracks all-day activity like steps, distance, calories burned and active minutes. See how every day stacks up with LEDs that light up like a scoreboard as you get closer to your goal. Then wear it at night to measure your sleep quality and wake with a silent, vibrating alarm. Day or night, Flex fits comfortably around your wrist, is water-resistant, and has a 5-day battery life. It also syncs to computers and 150+ leading smartphones, so you can access your stats anywhere and see your progress in charts and graphs. FREQUENTLY ASKED QUESTIONSWhat mobile devices are supported for syncing?The Fitbit Flex can sync directly to select iOS and Android devices. IOS: iPhone 4S, iPhone 5, 5S, 5C, iPod Touch (5th gen.), iPad 3, iPad 4, iPad mini. Android: Samsung Galaxy Note 10.1, Samsung Galaxy Note II, Samsung Galaxy S III, Samsung Galaxy S4How do I charge my flex?Your tracker battery lasts for about 5 days. To charge it, remove the tracker from the band and place it in the charger until all 5 lights are solid.If you are having trouble, your tracker's charging contacts may be obstructed by microscopic dirt or debris that prevents them from making a good connection to the charger. Use hand sanitizer and a tissue or dampen a cotton swab with rubbing alcohol and carefully clean the charging contacts on your tracker. Do not submerge your tracker in water or use abrasive cleaners. Thoroughly dry your tracker before attempting to charge. Be sure to fully seat your tracker into the charger, with the charging contacts fully inserted into the charging cable enclosure.How do I reset my tracker?lf your tracker is not responding, it may be fixed by restarting.1. Plug your charging cable into the USB port and insert your tracker into the charging cable. 2. Insert a paperclip into the small pinhole on the back of the charger. 3. Press on the pinhole for 3-4 seconds. Your Flex will now be reset. Take your tracker out of the charger and insert it back into the wristband.Can the wristband irritate my skin?The Flex wristband is made of a flexible, durable elastomer material similar to that used in many sports watches. It does not contain latex. The clasp is made of surgical-grade stainless steel and contains traces of nickel. As with any type of jewelry, some people may experience allergies. Numerous factors can cause an allergy, such as a nickel sensitivity, reactions to bacteria that can accumulate in watch wristbands or other wearable devices, a reaction between the wristband and your soap or perspiration, or an allergy to the material of the wristband. If you notice any signs of skin irritation or experience any discomfort, please discontinue use. From the Manufacturer • Certain features like Auto Sleep Tracking and SmartTrack may be disabled when using this accessory. Classic accessory bands are the recommended accessory for high intensity workouts and sleep tracking. • Do not wear the Flex 2 Pendant accessory while sleeping or during high intensity activity, as doing so could create a choking hazard. • Flex 2 Pendant accessories contain magnets. Magnets may interfere with pacemakers, defibrillators, or other medical devices. Consult your physician and the manufacturer of your medical device before using to determine if these accessories are safe for you. If the accessories may be interfering with your pacemaker, defibrillator, or other medical device, do not wear the accessories. Buying Guide Move it up: Since blood increases further up your arm, wear your tracker higher on your wrist to improve the heart rate signal during workouts. Start by moving the device up to three finger widths above your wrist bone, then experiment with slightly lower placement. Keep it secure: The less your tracker moves during exercise, the more chance you have of maintaining a heart rate signal throughout the activity. Do not wear the band too tightly, as this can restrict blood flow and goes against our wear and care guidelines. Hold steady for ten seconds: High intensity exercises or activities that cause you to keep your wrist bent (like push-ups) or move your arms vigorously (like dance) may interfere with heart rate signals. If you stop seeing a signal during these types of activities, hold your wrist steady for ten seconds during breaks to get your reading. Manufacturer Contact Information Customers contact: support@fitbit.com Review: MyFitnessPal integration works well - SUMMARY: This device will not do anything for you, but it will help you make good decisions about what you need to do yourself. Fitness is hard work. If I had to sum up what this device is doing for me, it is this. It is keeping me utterly honest about everything. I cannot lie to myself about how many calories I'm burning. It won't let me. Just knowing there is a record motivates me to make sure it is a good one. It's the same effect one gets if they know they are being graded.  ****** THE LONG VERSION I have been using the fitbit flex for five days now and I have fewer pounds and great fitting pants already, so it would be hard to regret my purchase. I went ahead and set my fitbit up to integrate with MyFitnessPal as soon as I set it up, so I have no idea how it works without it. Setting it up was a breeze. Go here: http://www.myfitnesspal.com/apps/show/fitbit and follow the instructions. Once it is set up it gives you a warning that you should only enter your food on MFP to avoid double entries. I have entered everything I eat on MFP, and the info magically finds it's way to my fitbit dashboard, and there have been no problems whatsoever. Entering exercise is a little more complicated. Once you've done the integration, your MFP exercise entries will require one extra step--the start time of your exercise. My entries consist mostly of running and swimming. Technically, I don't need to enter the runs, since the pedometer takes care of them just fine, but when I do enter a run, the two apps manage it well. MFP gives the start time and duration of the run to fitbit, and fitbit takes that info and does some calculations that take the pedometer data into account, and comes up with a number of calories burned. I have run into one snag...if I edit the start time of my entry in MFP after I've already logged it, it causes the exercise to log twice on fitbit and I have to go into fitbit and manually remove the double entry. Sometimes I'm lazy and I don't enter the runs in MFP and I just let fitbit use the pedometer data exclusively....I've not taken a close enough look at the difference to comment on it, but it seems to work well either way as far as calorie counting. I just prefer knowing the speed and duration of specific intervals and that data is lost if I don't enter it into MFP. I take the flex off when I swim laps, since I have a watch that counts my laps and distances for me and wearing both would be cumbersome. I enter my swims manually into MFP, and fitbit automatically calculates it all. I've had no problems. You'll have a new thing in your MFP display too. Your exercise log will have a "fitbit calorie adjustment" entry. For whatever reason, fitbit lets me eat just a little less than fitness pal does, so the math is obviously a little different on the two programs. If you are tall and have abnormally long legs like me, you may have to adjust fitbit's default stride settings. Their website can tell you how. The biggest lifestyle change for me has been brought about by the in-your-face awareness of just how sedentary sitting at a computer is. On days when I work at my desk, 6PM rolls around and I've only got maybe 500 steps logged. I'll hit the gym to do my 3 mile jog, and still be no where near the 10 thousand step goal that is the default setting for the fitbit, so I end up walking on the treadmill until I get there. I find myself going on long walks after my swim too. Maybe I'm crazy, but I can't stand to go to bed without meeting my step goals first, even if I've logged a long swim, but whatever the reasons, it is working, and fast. I am losing weight again after stalling out for quite a while. I mentioned only having 500 steps after a day at my desk. Yesterday I had my first day away from my desk...shopping, a little yardwork, housework, just getting all the little things that need done around the house...at 5pm I had logged 8000 steps and was almost to my goal. I mention this because I think this is what makes the fitbit worthwhile. It quantifies how sedentary your life is on a given day and then tells you exactly what you need to do to make up for it. And I know, if you are a desk worker like me, that 10,000 steps is going to seem a bit ridiculous after a day at the office, but trust me, if you can make yourself make up for it, you will be blown away by the results. I hesitate to put the numbers down for my weight loss over the last 5 days, because I have frankly lost weight faster than I should and I don't want to invite trolls or create unrealistic expectations...everyone is different. I am eating more than 2000 calories a day (within the recommendations of the app set at medium plan intensity), I'm not starving myself, and yes, my legs were pretty tired the first few days, but I promise, I feel great. I'll be at my goal of 145 in a couple of weeks at this rate. The fitbit didn't lose that weight for me...I worked my butt off all by myself, but fitbit helped me figure out what I needed to be doing. **** I know this review is getting long, but I wanted to mention a couple of other things. I LOVE the sleep monitoring. I have random bouts of insomnia, and I sometimes wake up repeatedly all night, and this thing has done a brilliant job of measuring how much time I've actually spent sleeping vs. how much time I've been in bed. And that number of hours of actual sleep correlates almost perfectly to how I feel, mentally, through the day. The default sensitivity is perfect for me...though I have seen it isn't so much for other people. It is easy to turn it on for naps too. Just tap it five times when you lay down, and again when you get up. You can fix it manually in the website if you forget...it will still have the movement data regardless of whether you tap it or not, it just needs to know when you were sleeping to fix it all. It accidentally goes into sleep mode here and there...once when I was using a hammer drill, once when I was using a hammer, and once when I was shaking a bottle of cat antibiotics to mix it, but when that happens, you know because it vibrates, and if you tap it five times right away to bring it out of sleep mode, it won't mess up your data. Review: good product if you understand its limitation - At a glance- good value, good motivation, function is limited but great product if make good use of it. Detail- I was doing research on smart watch/sport wear. At first I didn't consider flex at all as it doesn't monitor my heart rate. However, I received this as a gift and decided to try it out. Features flex offers: Activity track- it only tracks your step count automatically. Like how many steps you've walk every day. It does mistake my driving as step as I raise my hands when I drive. It doesn't count any step if you don't move your hands when you walk. You can track your exercise using GPS but you need to start it with your app before the exercise. Other than the mentioned activities, you need to manually enter other exercise you did, like weightlifting or biking. You can input the calories burned by doing those activities but its not automatic and you have pretty much no way to find out exactly how much you burned. I'm surprise it does record my dog walking as active minutes instead of normal walking. I walk a little faster and longer when I walk my dogs compare to normal daily errand walks food & drink log- you have to manually input how much you eat and drink, of course. It calculates calories intake and compare it to the calories you burned Goal setting- it let you set how much you want to walk, in steps and distance , and you can keep track of your progress by tapping the band twice. It shows one dot for every 20% you've done. You can enter a weight you want to achieve and it tells you how much you are away from it. You need to manually enter your weight every time unless you have the aria scale which connects to your app. Sleep pattern- you have to tap the band for a few seconds to put it in sleep mode before you sleep. I found it pretty accurate in tracking my awake hours and restless times at night. Basically it tracks your sleep pattern by tracking your hand movement. The more tou I've, the more restless you are. When you wake up, you tap the band again and put it back to normal mode. Its quite annoying you have to put it in sleep mode every night but as long as you remember yo do it, it works great. Friend connection- you can connect with your friend and compete with each other. Its relatively easy and you can decide what info you want to share on their website, you can't set your privacy level within the app tho. Overall, I like the fitbit flex more than I expected. Like I said, I didn't even put flex into my consideration because its limited function. But after using it for a while, it does motivate me to walk more, eat better, drink more water and let me understand my sleep pattern. Bottom line, this is one of the relatively cheaper sport wear available in the market. Understand its limitation and make good use of it. Most of the things require manual input using the app. Use the app, record everything and you will be motivated. If you are lazy with all the info entering then no smartware in the world can satisfy you because what you ate won't magically appear in your app. A side note about desertcart: I got another flex for my friend after I found it useful, got it for 98$ on desertcart and the price dropped to 79$ a week after, on desertcart or any store available. I contacted azon and they were super cool with refunding the difference to me. No hassles at all, that's why I'm a loyal desertcart shopper ## Features - One syncs automatically and wirelessly to tablets, computers and 150 plus leading iOS, Android and Windows smartphones using Bluetooth 4.0 wireless technology. Syncing to computers requires Internet connection and USB port. Syncing to mobile devices requires Bluetooth and Internet connection. Syncing range: 20 feet. Call notifications via Bluetooth 4.0 - Water Resistance: Charge has been tested up to 1 ATM meaning it is sweat, rain and splash proof. However, the device is not swim proof. We also recommend taking Charge off before showering because, as with any wearable device, it’s best for your skin if the band stays dry and clean - Warning: Do not use if you have a pacemaker or other internal, or implanted medical device. Not intended for use by children under 13. Always consult your physician. Slippery when wet - We recommend charging your device every few days to ensure you are always tracking. Charge time: One to two hours. Battery life: up to 7 - 10 days. Battery type: Lithium-polymer - Syncs with Windows Vista and later, Mac OS X 10.6 and up, iPhone 4S and later, iPad 3 gen. and later, and leading Android and Windows devices ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #264,181 in Electronics ( See Top 100 in Electronics ) #6,016 in Smart Arm & Wristband Accessories | | Customer Reviews | 3.9 out of 5 stars 22,332 Reviews | ## Images ![Fitbit Flex Wireless Activity + Sleep Wristband, Slate, Small/Large - Image 1](https://m.media-amazon.com/images/I/51qrk3-c-lL.jpg) ![Fitbit Flex Wireless Activity + Sleep Wristband, Slate, Small/Large - Image 2](https://m.media-amazon.com/images/I/61Xd7Kp6Z3L.jpg) ![Fitbit Flex Wireless Activity + Sleep Wristband, Slate, Small/Large - Image 3](https://m.media-amazon.com/images/I/61Q3Lf5oEVL.jpg) ![Fitbit Flex Wireless Activity + Sleep Wristband, Slate, Small/Large - Image 4](https://m.media-amazon.com/images/I/61rptPSEvzL.jpg) ![Fitbit Flex Wireless Activity + Sleep Wristband, Slate, Small/Large - Image 5](https://m.media-amazon.com/images/I/91zoPy4bcEL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ MyFitnessPal integration works well *by S***N on May 25, 2013* SUMMARY: This device will not do anything for you, but it will help you make good decisions about what you need to do yourself. Fitness is hard work. If I had to sum up what this device is doing for me, it is this. It is keeping me utterly honest about everything. I cannot lie to myself about how many calories I'm burning. It won't let me. Just knowing there is a record motivates me to make sure it is a good one. It's the same effect one gets if they know they are being graded.  ****** THE LONG VERSION I have been using the fitbit flex for five days now and I have fewer pounds and great fitting pants already, so it would be hard to regret my purchase. I went ahead and set my fitbit up to integrate with MyFitnessPal as soon as I set it up, so I have no idea how it works without it. Setting it up was a breeze. Go here: http://www.myfitnesspal.com/apps/show/fitbit and follow the instructions. Once it is set up it gives you a warning that you should only enter your food on MFP to avoid double entries. I have entered everything I eat on MFP, and the info magically finds it's way to my fitbit dashboard, and there have been no problems whatsoever. Entering exercise is a little more complicated. Once you've done the integration, your MFP exercise entries will require one extra step--the start time of your exercise. My entries consist mostly of running and swimming. Technically, I don't need to enter the runs, since the pedometer takes care of them just fine, but when I do enter a run, the two apps manage it well. MFP gives the start time and duration of the run to fitbit, and fitbit takes that info and does some calculations that take the pedometer data into account, and comes up with a number of calories burned. I have run into one snag...if I edit the start time of my entry in MFP after I've already logged it, it causes the exercise to log twice on fitbit and I have to go into fitbit and manually remove the double entry. Sometimes I'm lazy and I don't enter the runs in MFP and I just let fitbit use the pedometer data exclusively....I've not taken a close enough look at the difference to comment on it, but it seems to work well either way as far as calorie counting. I just prefer knowing the speed and duration of specific intervals and that data is lost if I don't enter it into MFP. I take the flex off when I swim laps, since I have a watch that counts my laps and distances for me and wearing both would be cumbersome. I enter my swims manually into MFP, and fitbit automatically calculates it all. I've had no problems. You'll have a new thing in your MFP display too. Your exercise log will have a "fitbit calorie adjustment" entry. For whatever reason, fitbit lets me eat just a little less than fitness pal does, so the math is obviously a little different on the two programs. If you are tall and have abnormally long legs like me, you may have to adjust fitbit's default stride settings. Their website can tell you how. The biggest lifestyle change for me has been brought about by the in-your-face awareness of just how sedentary sitting at a computer is. On days when I work at my desk, 6PM rolls around and I've only got maybe 500 steps logged. I'll hit the gym to do my 3 mile jog, and still be no where near the 10 thousand step goal that is the default setting for the fitbit, so I end up walking on the treadmill until I get there. I find myself going on long walks after my swim too. Maybe I'm crazy, but I can't stand to go to bed without meeting my step goals first, even if I've logged a long swim, but whatever the reasons, it is working, and fast. I am losing weight again after stalling out for quite a while. I mentioned only having 500 steps after a day at my desk. Yesterday I had my first day away from my desk...shopping, a little yardwork, housework, just getting all the little things that need done around the house...at 5pm I had logged 8000 steps and was almost to my goal. I mention this because I think this is what makes the fitbit worthwhile. It quantifies how sedentary your life is on a given day and then tells you exactly what you need to do to make up for it. And I know, if you are a desk worker like me, that 10,000 steps is going to seem a bit ridiculous after a day at the office, but trust me, if you can make yourself make up for it, you will be blown away by the results. I hesitate to put the numbers down for my weight loss over the last 5 days, because I have frankly lost weight faster than I should and I don't want to invite trolls or create unrealistic expectations...everyone is different. I am eating more than 2000 calories a day (within the recommendations of the app set at medium plan intensity), I'm not starving myself, and yes, my legs were pretty tired the first few days, but I promise, I feel great. I'll be at my goal of 145 in a couple of weeks at this rate. The fitbit didn't lose that weight for me...I worked my butt off all by myself, but fitbit helped me figure out what I needed to be doing. **** I know this review is getting long, but I wanted to mention a couple of other things. I LOVE the sleep monitoring. I have random bouts of insomnia, and I sometimes wake up repeatedly all night, and this thing has done a brilliant job of measuring how much time I've actually spent sleeping vs. how much time I've been in bed. And that number of hours of actual sleep correlates almost perfectly to how I feel, mentally, through the day. The default sensitivity is perfect for me...though I have seen it isn't so much for other people. It is easy to turn it on for naps too. Just tap it five times when you lay down, and again when you get up. You can fix it manually in the website if you forget...it will still have the movement data regardless of whether you tap it or not, it just needs to know when you were sleeping to fix it all. It accidentally goes into sleep mode here and there...once when I was using a hammer drill, once when I was using a hammer, and once when I was shaking a bottle of cat antibiotics to mix it, but when that happens, you know because it vibrates, and if you tap it five times right away to bring it out of sleep mode, it won't mess up your data. ### ⭐⭐⭐⭐⭐ good product if you understand its limitation *by Y***G on May 5, 2015* At a glance- good value, good motivation, function is limited but great product if make good use of it. Detail- I was doing research on smart watch/sport wear. At first I didn't consider flex at all as it doesn't monitor my heart rate. However, I received this as a gift and decided to try it out. Features flex offers: Activity track- it only tracks your step count automatically. Like how many steps you've walk every day. It does mistake my driving as step as I raise my hands when I drive. It doesn't count any step if you don't move your hands when you walk. You can track your exercise using GPS but you need to start it with your app before the exercise. Other than the mentioned activities, you need to manually enter other exercise you did, like weightlifting or biking. You can input the calories burned by doing those activities but its not automatic and you have pretty much no way to find out exactly how much you burned. I'm surprise it does record my dog walking as active minutes instead of normal walking. I walk a little faster and longer when I walk my dogs compare to normal daily errand walks food & drink log- you have to manually input how much you eat and drink, of course. It calculates calories intake and compare it to the calories you burned Goal setting- it let you set how much you want to walk, in steps and distance , and you can keep track of your progress by tapping the band twice. It shows one dot for every 20% you've done. You can enter a weight you want to achieve and it tells you how much you are away from it. You need to manually enter your weight every time unless you have the aria scale which connects to your app. Sleep pattern- you have to tap the band for a few seconds to put it in sleep mode before you sleep. I found it pretty accurate in tracking my awake hours and restless times at night. Basically it tracks your sleep pattern by tracking your hand movement. The more tou I've, the more restless you are. When you wake up, you tap the band again and put it back to normal mode. Its quite annoying you have to put it in sleep mode every night but as long as you remember yo do it, it works great. Friend connection- you can connect with your friend and compete with each other. Its relatively easy and you can decide what info you want to share on their website, you can't set your privacy level within the app tho. Overall, I like the fitbit flex more than I expected. Like I said, I didn't even put flex into my consideration because its limited function. But after using it for a while, it does motivate me to walk more, eat better, drink more water and let me understand my sleep pattern. Bottom line, this is one of the relatively cheaper sport wear available in the market. Understand its limitation and make good use of it. Most of the things require manual input using the app. Use the app, record everything and you will be motivated. If you are lazy with all the info entering then no smartware in the world can satisfy you because what you ate won't magically appear in your app. A side note about amazon: I got another flex for my friend after I found it useful, got it for 98$ on amazon and the price dropped to 79$ a week after, on amazon or any store available. I contacted azon and they were super cool with refunding the difference to me. No hassles at all, that's why I'm a loyal amazon shopper ### ⭐⭐⭐⭐ A great start for a decent price. *by B***O on August 19, 2013* In the box: - Fitbit Flex device - Two wrist bands: 1 small, 1 large - One Clasp - USB Bluetooth Receiver - Getting Started Guide DISCLOSURE This device works flawlessly out of the box and will work with a number of smart phone models, however check the compatible device list for Android compatible models: [...] . The device will only work with iPhone 4S and 5 devices. This is not due to a limitation of the Flex device but rather the case that it uses newer Bluetooth technology which is supported by newer smart phones. BASIC OPERATION As for operation the tiny device slides into one of two silicone wrist bands you receive, small and large, either of which has many different adjustable positions to get a good fit via the Clasp. You will receive one Clasp so if you change wrist bands you have to swap the Clasp, also if you break the Clasp you'll have to order a new one. The Flex device is self contained so water, sweat, etc is a non-issue. I would recommend drying the device if you go through a pool or salt water as the copper contacts may corrode or become non-conductive which is the only way to charge the device. The wrist band is hearty and takes a lot of punishment although being silicone you will see wear and tear over time. They sell replacement bands for those that have to maintain the shiny new look but if blemishes don't bother you I would imagine a single band would hold up for a couple of years. MONITORING Activity Monitoring The device works by monitoring you motion from the moment of your arms and vibrations through the steps you take, it tries to pair these up to account for one step. There is some inaccuracy of I'd say about 2~3% so if you looking for super accurate activity measurement I would recommend one of their clip on devices versus the Flex. However if your looking for a no non-sense way to track your daily activity and get motivated to be more active this is a perfect device to start. Sleep Monitoring The Sleep monitoring is self activated. Repeat! The Sleep monitoring is self activated! You give the device 5 taps to activate sleep mode, once this done the device waits for you to come to rest and records when you move or become active after you have been at rest. It records each of these events as 'restless' or 'awake'. Restless is when you move during your sleep, toss and turn. Awake is when the device records activity of complex movement, like getting up in the night to go to the bathroom, sleep walking, etc. This can be useful for making sure you getting rest and ensuring it is good rest. For those with sleeping issues this could give a better insight to what kind of nights you are having as well. SOFTWARE The included free applications offer Activity and Sleep tracking through the Flex device. The website shows you steps and sleep patterns via the graphs. If you want more in-depth or detailed comparison information you can buy a premium membership for about $50 a year. You can also link the devices activity logs to a food tracking program such as MyFitnessPal to track burnt calories and intake calories for a better idea of how much your consuming versus burning. They support several other such applications as well refer to the fitbit site for more on those. SUMMARY Overall I have been quite happy with the device and would say it has encouraged me to become more active. Nothing is sadder than seeing a single bubble of activity when you know you need to get off your duff. It syncs wireless to the USB device or your smart phone so tracking is as easy as it gets. Dead simple, fairly accurate, in-expensive compared to other devices that do and offer less. So highly recommended. ## Frequently Bought Together - Fitbit Flex Wireless Activity + Sleep Wristband, Slate, Small/Large - Fitbit Inspire 3 Health &-Fitness-Tracker with Stress Management, Workout Intensity, Sleep Tracking, 24/7 Heart Rate and more, Midnight Zen/Black One Size (S & L Bands Included) - Fitbit Aria Air Smart Scale, Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.dk/products/257050-fitbit-flex-wireless-activity-sleep-wristband-slate-small-large](https://www.desertcart.dk/products/257050-fitbit-flex-wireless-activity-sleep-wristband-slate-small-large) --- *Product available on Desertcart Denmark* *Store origin: DK* *Last updated: 2026-05-28*