OCOOPA Magnetic Hand Warmers Rechargeable 2 Pack, UL Safety Heat 100-126°F, 3-Settings, Pocket-Sized, Max. 8 Hrs Long Lasting,Great for Raynauds, Golf, Hunting, Camping, Gifts for Men Women, UT3 Lite

Work great. 3 heat settings. I use low most of the time and they go all day on a charge. Can be recharged from a power bank or from a wall powered charger. They can turn on when in your pocket if button presses against something. Heats quickly.

I purchased these after I froze my butt off on vacation in Japan. I had the disposable one-time-use hand warmers and those completely failed me on that trip, so I wanted something more reliable. Performance: These work better than I thought they would. Small but powerful - they warm really quickly and hold heat well. The double-sided design means both hands get warmth. Temperature settings: Has different temperature settings (100-126°F) so you can adjust based on how cold it is. I appreciated being able to control the heat level. Battery life: These last a long time off a single charge, which was a huge improvement over disposable warmers that would die when I needed them most. Portability: Compact size - small enough to put in my pockets without being bulky. Comes with lanyards if you want to attach them to your wrists instead. Charging: Includes a USB-C charging cable, which is convenient since that's what most devices use now. Bottom line: If you're traveling somewhere cold or just need reliable hand warmers, these are absolutely worth it. Way more economical and dependable than disposable ones. Wish I'd had these in Japan!

Compact warmers which heat up very quickly. Worked extremely well for a NFL playoff football game in the Northeast's cold weather. Battery life was good, lasted the entire game on the low setting, but that was more than enough to keep my hands warm. High was warmer than standard chemical hand warmers. They come with a dual USB-A charger with two USB-C outputs to charge the warmers, or you can use your own USB-C cables. Note that these only heat on one side, so if you're holding it in your hand you might rotate it periodically. While they do have magnets to hold them together they are quite weak and don't work all that well. They do come with a small felt bag for storage. Charge time is slow, so if you're going to be out for a long time you might want to consider a second set.

I’ve been using these OCOOPA hand warmers for a little while now, and overall I really like them. They definitely get hot — I’d guess close to the 125°F they advertise — and that temperature is perfect for actually warming your hands. As someone with mild Raynaud’s, the heat really does make a difference, and these offer quick relief when my fingers start to go cold. The downsides are mostly around practicality. The battery life is fine, but the charge time feels slow. When I run them on high, it seems like they take almost as long to recharge as they last. The included Y-shaped charging cable was a nice idea in theory, but one of the two output ends on mine didn’t work at all, so I ended up charging one side at a time anyway. OCOOPA’s model system could also be clearer. The numbers (3, 4, etc.) feel random — if the “4” is supposed to be better than the “3,” I really can’t tell how based on their descriptions. On top of that, the sizing isn’t consistent: some models list measurements in centimeters and others in inches. It makes comparison way harder than it should be. For larger hands, these are on the small side. They still help, but they don’t fill your palm the way I’d like. I also ordered another OCOOPA model with heat on both sides and I prefer that one. Its a nice feature that warms more evenly and works just as well overall. I’d recommend a 2-sided model if you’re deciding between the two. One major downside of both models is the size. Yes, small makes them portable and easy to fit in your pocket, but these do not work great for people with large hands. Still, the heat output and reliability make this a solid 4-star pick — great for cold hands and Raynaud’s, with room for improvement in design and charging.

Wow they heat up so fast! They came fully charged with wrist lanyards that can be attached, a charger with two on one end so both hand warmers can be charged at the same time, a storage bag and very limited instructions but it is easy to figure out and easy to use. They appear to be well made. They fit comfortably in the hands and are slim enough for smaller hands but I think they would work well for larger hands as well. They are magnetic so they stay together when you aren’t using them. I bought them due to arthritis and poor circulation and the warmth along with the slim design are a great benefit. I think they are a great value.

I use a zippo hand warmer in my sleeping bag when back packing but you have to carry fuel and it can sometimes not work well. These are cheap, i’m shocked how well these work. They are compact. Heat up fast. Last 8hrs on low and reliable to use. At the price point I’m amazed. They last 8 hrs on low. These will be perfect to keep my hands and feet warm in my sleeping bag when back packing. Would for sure recommend.

These OCOOPA Magnetic Hand Warmers have been a great purchase, especially for colder days and outdoor activities. They heat up quickly and provide steady, consistent warmth that actually lasts. I love that they magnet together, making them easy to store, carry in a pocket, or keep track of when not in use. The size is perfect small enough to fit comfortably in your hands or gloves, but powerful enough to really make a difference. The rechargeable feature is a huge plus compared to disposable warmers, and the battery life has been impressive for the size. They also feel solid and well made, not cheap or flimsy. Overall, these hand warmers are convenient, effective, and reusable, making them a great value. Perfect for walks, outdoor sports, commuting, or just staying cozy around the house. I’d definitely buy them again. I love to use these in the spring during my kiddos cold sports practices.

Just received these yesterday, and I can immediately say "Wow!" These hand warmers are smaller than I expected, which is actually a good thing! They got hot faster than I expected (I tested out a friends rechargeable hand warmers before buying my own, and his took a full minute before getting warm - these Ocoopa warmers start getting warm in 3-5 seconds!). They were super easy to charge with the included cable (thank you, Ocoopa, for that!). The packaging was impressive. And the included bag and wrist straps were a nice surprise and bonus. As someone who suffers a mild form of Reynaud's syndrome, these hand warmers are a welcome addition to my winter attire!