---
product_id: 292992440
title: "C28 Bluetooth Transmitter Receiver, 3.5mm Aux Audio Adapter for Car, Plane"
brand: "gmcell"
price: "219 kr"
currency: DKK
in_stock: true
reviews_count: 13
category: "Gmcell"
url: https://www.desertcart.dk/products/292992440-c28-bluetooth-transmitter-receiver-3-5mm-aux-audio-adapter-car
store_origin: DK
region: Denmark
---

# 10m stable Bluetooth 5.0 2-in-1 Tx/Rx mode 6 hrs battery life C28 Bluetooth Transmitter Receiver, 3.5mm Aux Audio Adapter for Car, Plane

**Brand:** gmcell
**Price:** 219 kr
**Availability:** ✅ In Stock

## Summary

> 🎧 Transform any device into a wireless audio powerhouse—stay connected, stay ahead!

## Quick Answers

- **What is this?** C28 Bluetooth Transmitter Receiver, 3.5mm Aux Audio Adapter for Car, Plane by gmcell
- **How much does it cost?** 219 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/292992440-c28-bluetooth-transmitter-receiver-3-5mm-aux-audio-adapter-car)

## Best For

- gmcell enthusiasts

## Why This Product

- Trusted gmcell brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-Day Power:** Up to 6 hours of continuous use with quick 2-hour USB recharge—perfect for commutes and workouts.
- • **Reliable Connection:** Stable 10-meter Bluetooth 5.0 range with instant 3-second re-pairing—no interruptions, no stress.
- • **Dual Mode Flexibility:** Seamlessly switch between transmitting and receiving audio with one button.
- • **Universal Compatibility:** Connects with AirPods, Bose, JBL, Sony, vintage stereos, TVs, cars, gym equipment, and more.
- • **Effortless Wireless Upgrade:** Plug & play Bluetooth for any 3.5mm aux device—no apps, no codes, no hassle.

## Overview

The C28 Bluetooth Transmitter Receiver instantly adds wireless Bluetooth 5.0 capability to any device with a 3.5mm aux port. Featuring a simple plug-and-play design, dual transmitter/receiver modes, and up to 6 hours of battery life, it effortlessly connects your vintage stereos, car audio, TVs, and headphones without apps or pairing codes. Compact and versatile, it delivers stable 10-meter connectivity and broad compatibility with top headphone brands and devices, making it the ultimate audio upgrade for professionals on the go.

## Description

desertcart.com: C28 Bluetooth Transmitter Receiver, 3.5mm Aux Audio Adapter for Car, Plane | 2-in-1 Bluetooth 5.0, Hands-free Call with Car Stereo, TV, Speaker, Headphones, MP3 Player. Detachable 3.5mm Plug. No App : Electronics

Review: Worked like a charm! Works through walls, without loss up to about 30 feet away! - Great little product. I have a receiver type of one in my car and have used it for YEARS so I can listen to my phone thru my car speakers using bluetooth but I needed the Transmitter function this one has so I can hook it up to my Denon stereo receiver and listen to my JVC turntable using my AKG wireless/bluetooth headphones. Also works well with my bluetooth wireless earbuds. The little Transmitter/Receiver switch on the side has to be switched to the right setting - and it's nearly impossible to see the "Tx", "Rx" stamped on it - had to use a magnifying glass. Also - this has a mini-stereo plug - so you'll need one of those 1/4" stereo to 1/8" stereo converters because most vintage stereo receivers (like my Sony, Sansui and this Denon) all have 1/4" stereo plugs. I have accumulated lots of those over the years so I didn't buy one so I cannot recommend one - but you'll want one that has the 1/4" stereo male to 1/8" female connector - and don't get the ones with the 1/8" female connectors that 'screw in' - oh - I'll just go to desertcart and find the one you want - this one: VCE 6.35mm (1/4 inch) Male to 3.5mm (1/8 inch) Female Stereo Audio Jack Adapter. $7 for two gold plated ones. Hmm. I may buy these - they are probably better than the ones I have!
Review: Works, but not great (UPDATE) - It does what it says it does, I used it for transmission from my TV to headphones. It was able to connect no problems, no cutting in and out or disconnecting, atleast until the battery starts to die, then there's a series of warning beeps. This is one of the things I did not like, with a fully charged unit, I wasn't able to get through a 2hr movie before battery was dead. Aside from the weak internal battery, the volume was super low through my headphones and had to be cranked super high in order to get decent sound, not great sound, just decent. For that, I'll probably spend the money to get a better unit, and never use this one again. I would not buy again UPDATE 12/27/23 I'm updating to 5 stars due to the fact that the seller contacted me on their own, apologized for the defective transmitter and issued a full refund. That is great customer service and worth 5 stars on its own, I rarely see that kind of customer service anymore!

## Features

- Instant plug-and-play — no app, no menus, no pairing codes: Plug the C28 into any 3.5mm aux jack and it pairs with your AirPods, JBL, Bose, or Sony headphones in seconds. One button switches between transmitter mode (send audio out) and receiver mode (bring audio in). Nothing to configure — ever.
- Brings Bluetooth to any device made before wireless — instantly: Works with vintage stereos, Victrola & turntable record players, older TVs without Bluetooth, classic car aux inputs (pre-2015 vehicles), CD players, gym treadmills, projectors, and airplane seats. If it has a 3.5mm headphone or aux jack, C28 makes it wireless — no technician, no adapter tangle.
- Up to 6 hours per charge — built for daily commutes and short trips: Fully recharges in 2 hours via the included USB cable. Perfect for a daily car ride, gym session, or an evening at home. For longer journeys, charge it overnight or keep a power bank handy — it charges while it works via USB. Battery level shows on the red/blue LED indicator.
- Stable 10-metre connection in both TX and RX modes — and a 5-second fix if it ever drops: Maintains clear audio up to 33ft in open space. Compatible with AirPods (all models), most Bluetooth headphones, speakers, and car audio systems. If pairing ever fails, hold the button for 5 seconds to reset — it re-pairs fresh in under 3 seconds. No call to support needed.
- Works with virtually everything that has a 3.5mm port — phones, tablets, and beyond: Compatible with iPhone, Android, iPad, Nintendo Switch, Nintendo 3DS, PlayStation controllers, Samsung TVs, LG TVs, older Sony and Pioneer receivers, Garageband setups, and most Bluetooth speakers and headsets. One compact adapter. Dozens of use cases. No driver installation required.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08XNP171S |
| Additional Features | Built-In Microphone, Hands-Free Calls, Noise Cancellation, Rechargeable battery, Transmitter/Receiver |
| AntennaDescription | Radio |
| Audio Input | Aux port |
| Audio Output Mode | Stereo |
| Audio Output Type | Headphones Wireless Earbuds In-Ear Headphones Over-Ear Headphones Speakers Bluetooth Speakers Portable Speakers Home Stereo Receivers AV Receivers Car Audio Systems Soundbars AirPods AirPods Pro AirPods Max JBL Bluetooth Speakers Bose Bluetooth Headphones Sony Bluetooth Headphones Beats Headphones |
| Battery Charge Time | 1 hours |
| Battery Type | Lithium-Ion |
| Battery Weight | 10 g |
| Best Sellers Rank | #26,828 in Electronics ( See Top 100 in Electronics ) #143 in Wireless Audio Receivers & Adapters |
| Brand | GMCELL |
| Color | black |
| Compatibility Options | Samsung Galaxy S8/S8 Plus, Google Nexus 6P, Nintendo Switch, Sony XZ2, Apple iPhone 5S, Apple iPhone 8, Google Nexus 6, Apple iPhone 6 Plus, Apple iPhone 5c, Apple iPhone SE |
| Compatible Devices | Samsung Galaxy S8, Samsung Galaxy S8 Plus, iPhone, iPad, iPod, MacBook, Android smartphones, Android tablets, Smart TV, older TV with headphone jack, car stereo with aux input, Nintendo Switch, Nintendo 3DS, PlayStation 4, PlayStation 5, PC, laptop, Victrola record player, turntable, vintage stereo, home stereo receiver, CD player, projector, gym treadmill, airplane seat audio jack |
| Compatible with Vehicle Type | Convertible, Coupe, Hatchback, Minivan, Motorcycle, Pickup Truck, SUV, Sedan, Station Wagon |
| Connectivity Technology | 3.5 mm, AUX , Bluetooth |
| Connector Type Used on Cable | Auxiliary, Stereo Audio |
| Control Method | Push Button |
| Control Type | Pressbuttons |
| Customer Reviews | 3.8 out of 5 stars 6,033 Reviews |
| Data Link Protocol | Bluetooth 5.0 |
| Enclosure Material | Metal, Plastic |
| Hardware Interface | 3.5mm Audio, Bluetooth 5 |
| Human Interface Input | Buttons |
| Installation Type | Plug in |
| Item Dimensions L x W x H | 0.87"L x 0.47"W x 2.36"H |
| Item Type Name | Wireless Audio Receiver & Transmitter |
| Item Weight | 0.04 kg |
| Lithium Battery Weight | 2 g |
| Lithium-Battery Energy Content | 0.5 watt-hours |
| Lithium-Battery Voltage | 3.7 volts_of_direct_current |
| Manufacturer | PKG |
| Material | Metal, Plastic |
| Model Name | 3.5mm Aux Bluetooth transmitter receiver 2 in 1 |
| Mounting Type | Plug |
| Number of Batteries | 1 Lithium Ion batteries required. (included) |
| Number of Channels | 2 |
| Number of Lithium-ion Cells | 1 |
| Number of Ports | 1 |
| Outer Material | Plastic |
| Power Source | Battery Powered |
| Product Dimensions | 0.87"L x 0.47"W x 2.36"H |
| Special Feature | Built-In Microphone, Hands-Free Calls, Noise Cancellation, Rechargeable battery, Transmitter/Receiver Special Feature Built-In Microphone, Hands-Free Calls, Noise Cancellation, Rechargeable battery, Transmitter/Receiver See more |
| Supported Application | Audio streaming applications |
| Supported Media Type | MP3 |
| Supported Standards | Bluetooth 5.0 |
| UPC | 765151109940 |
| Voltage | 5 volts_of_direct_current |
| Warranty Description | 2 year manufacture warantee |
| Wireless Compability | Bluetooth |

## Product Details

- **Brand:** GMCELL
- **Connectivity Technology:** 3.5 mm, AUX, Bluetooth
- **Material:** Metal, Plastic
- **Power Source:** Battery Powered

## Images

![C28 Bluetooth Transmitter Receiver, 3.5mm Aux Audio Adapter for Car, Plane - Image 1](https://m.media-amazon.com/images/I/51Mseo5nbmL.jpg)

## Questions & Answers

**Q: Does this work with my car if it only has an aux port and no Bluetooth?**
A: Yes — this is exactly what C28 is designed for. Plug it into your car's 3.5mm aux port and set it to RX mode. Your phone connects to C28 over Bluetooth, and audio streams wirelessly through your car stereo. Works with any car with a 3.5mm aux input.

**Q: Will it work with my Victrola or turntable record player?**
A: Yes. Plug C28 into your turntable's headphone or aux output jack and set it to TX mode. C28 transmits the audio wirelessly to your Bluetooth headphones or speaker. Works with Victrola, Crosley, Audio-Technica, and any turntable with a 3.5mm output.

**Q: Can I use this to connect my AirPods to an older TV that doesn't have Bluetooth?**
A: Yes. Plug C28 into your TV's 3.5mm headphone jack and set it to TX mode. C28 transmits the audio wirelessly to your AirPods. The TV's internal speaker mutes automatically when the headphone jack is in use. Works with all AirPods models.

**Q: Can I stream music from my phone wirelessly to a wired speaker using this?**
A: Yes — this is C28's RX mode. Plug it into your wired speaker's aux input and set to RX. Then pair your phone to C28 via Bluetooth. Works with any wired speaker, home stereo, or amplifier with a 3.5mm aux input.

**Q: What devices can I plug C28 into as a source or output?**
A: Any device with a 3.5mm headphone or aux port: older TVs, car stereos, turntables, CD players, wired speakers, home stereo, soundbars, gym treadmills, PCs, laptops, projectors, Nintendo Switch, PlayStation controllers, and airplane seat audio jacks.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked like a charm! Works through walls, without loss up to about 30 feet away!
*by G***R on February 22, 2024*

Great little product. I have a receiver type of one in my car and have used it for YEARS so I can listen to my phone thru my car speakers using bluetooth but I needed the Transmitter function this one has so I can hook it up to my Denon stereo receiver and listen to my JVC turntable using my AKG wireless/bluetooth headphones. Also works well with my bluetooth wireless earbuds. The little Transmitter/Receiver switch on the side has to be switched to the right setting - and it's nearly impossible to see the "Tx", "Rx" stamped on it - had to use a magnifying glass. Also - this has a mini-stereo plug - so you'll need one of those 1/4" stereo to 1/8" stereo converters because most vintage stereo receivers (like my Sony, Sansui and this Denon) all have 1/4" stereo plugs. I have accumulated lots of those over the years so I didn't buy one so I cannot recommend one - but you'll want one that has the 1/4" stereo male to 1/8" female connector - and don't get the ones with the 1/8" female connectors that 'screw in' - oh - I'll just go to Amazon and find the one you want - this one: VCE 6.35mm (1/4 inch) Male to 3.5mm (1/8 inch) Female Stereo Audio Jack Adapter. $7 for two gold plated ones. Hmm. I may buy these - they are probably better than the ones I have!

### ⭐⭐⭐⭐⭐ Works, but not great (UPDATE)
*by M***D on December 14, 2023*

It does what it says it does, I used it for transmission from my TV to headphones. It was able to connect no problems, no cutting in and out or disconnecting, atleast until the battery starts to die, then there's a series of warning beeps. This is one of the things I did not like, with a fully charged unit, I wasn't able to get through a 2hr movie before battery was dead. Aside from the weak internal battery, the volume was super low through my headphones and had to be cranked super high in order to get decent sound, not great sound, just decent. For that, I'll probably spend the money to get a better unit, and never use this one again. I would not buy again UPDATE 12/27/23 I'm updating to 5 stars due to the fact that the seller contacted me on their own, apologized for the defective transmitter and issued a full refund. That is great customer service and worth 5 stars on its own, I rarely see that kind of customer service anymore!

### ⭐⭐⭐⭐ Works great, but some weird connectivity stuff (with iPhones at least)
*by A***B on May 20, 2021*

Sound quality is great, I use it in my car all the time, and the battery life seems good too. The range is very good, it can cover the entirety of an average Subway restaurant (I work there and use it on the speakers), but sometimes it cuts in and out if there’s a large metal object between you. Another thing is that when you first connect to it, sometimes it disconnects you and you have to connect again, but after that it works fine. If someone else connects to it it will do this to them, and then do it to you again when you reconnect. I don’t know about Android phones, but on my iPhone, when you turn it off, the little icon at the top of the screen goes away, but in your settings it still shows as connected, and you’ll have to disconnect to allow someone else to connect to it. If you choose to disconnect after you turn it off, when you turn it back on it will automatically connect. If you don’t disconnect after turning it off, when you turn it back on you’ll have to go into your setting and just tap on it will work again. It also registers to your phone (at least iPhones) as a pair of headphone with a microphone, however it doesn’t have a microphone, so if you answer a phone call you’ll have to switch to speaker so they can hear you. I’ve only used the transmitter (Tx) mode once to make sure it worked, and it seemed to work fine although the took a bit before it would connect to my headphones. Volume control is fine, although it’s much quieter than I feel like it should be. When I plug my phone into my car via a cable the volume levels seem about the same as the radio, but when I plug this in I have to turn the car volume up much farther to achieve the same volume level. Although it can be a bit quiet, it works amazingly. The weird connectivity stuff is the only thing keeping this review from being 5 star.

## Frequently Bought Together

- Bluetooth Transmitter Receiver Wireless Adapter: 3.5mm Aux Jack Stereo Audio Input Output - for TV Car Headphone Speakers iPhone PC
- NANYI 1/4'' Male to 1/8'' Female Stereo Headphone Adapter Connect Cable, Upgrade 6.35mm Jack Stereo Socket Male to 3.5mm Jack Stereo Plug Female for Headphone, Amp Adapte, Black 1-Pack
- VCE 6.35mm (1/4 inch) Male to 3.5mm (1/8 inch) Female Stereo Audio Jack Adapter for Aux Cable, Guitar Amplifier, Headphone, 2 Pack

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-09-21*