






Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to UK.
✈️ Elevate your in-flight audio game—wireless freedom at 30,000 feet!
The Avantree Relay is a premium Bluetooth transmitter designed specifically for airplane entertainment systems. It connects via a 3.5mm AUX jack and supports simultaneous pairing of two Bluetooth headphones, enabling shared wireless audio experiences. Equipped with Qualcomm aptX Adaptive technology, it delivers high-definition sound with minimal latency. With up to 25 hours of battery life on a single charge, it’s ideal for long-haul travelers seeking a clutter-free, premium audio upgrade. Compact and easy to use, it’s the ultimate travel companion for Bluetooth headphone users.









| ASIN | B0C3QQ4X6F |
| Additional Features | 1. aptX-Adaptive Support; 2. Dual Link; 3. 20hr Playtime |
| AntennaDescription | Bluetooth antenna for wireless audio transmission |
| Audio Input | 3.5mm Audio Jack |
| Audio Output Mode | Digital Bluetooth (aptX-Adaptive, aptX-Low Latency) |
| Audio Output Type | Bluetooth |
| Battery Charge Time | 2 Hours |
| Battery Type | Lithium-Polymer |
| Battery Weight | 4.4 Grams |
| Best Sellers Rank | #1 in MP3 Player Bluetooth Transmitters |
| Bluetooth support? | Yes |
| Brand | Avantree |
| Color | 1-Black |
| Compatibility Options | Tablet,PC, Gym Equipment |
| Compatible Devices | Bluetooth headphones or earbuds |
| Connectivity Technology | Bluetooth |
| Connector Type Used on Cable | Auxiliary |
| Control Method | Touch |
| Control Type | simple" or "basic |
| Customer Reviews | 4.3 out of 5 stars 6,102 Reviews |
| Data Link Protocol | Bluetooth |
| Enclosure Material | Acrylonitrile Butadiene Styrene (ABS) |
| Hardware Interface | Bluetooth |
| Human Interface Input | Buttons |
| Includes Remote | No |
| Installation Type | Plug In |
| Lithium Battery Weight | 0.2 Grams |
| Lithium-Battery Energy Content | 1 Watt Hours |
| Manufacturer | Avantree |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Model Name | Relay |
| Number of Batteries | 1 CR5 batteries required. (included) |
| Number of Channels | 2 |
| Number of Lithium-ion Cells | 1 |
| Outer Material | Acrylonitrile Butadiene Styrene (ABS) |
| Power Source | Battery Powered |
| Rechargeable Battery Included | Yes |
| Special Feature | 1. aptX-Adaptive Support; 2. Dual Link; 3. 20hr Playtime |
| Supported Application | Any audio application with AUX output |
| Supported Media Type | bluetooth |
| Supported Standards | Bluetooth, aptX, aptX-Adaptive, aptX-Low Latency |
| Unit Count | 1.0 Count |
| Warranty Description | Warranty - 12 months (extend to 24 months with product registration) | Extensive Support: Chat, Email, Phone, Online Clinic, Video Tutorials, FAQ and Registration - avantree.com/support |
| Wireless Compability | Bluetooth |
A**L
Ideal for flying with bluetooth headphones; a well thought out product
Why did I buy this product? Because I make international flights on a regular basis. For travel, noise canceling headphones are a must-have, but most are now bluetooth. Unfortunately, most cattle class seats have infotainment systems that only provide mini-jack outputs. Enter this device as the perfect solution! At least in my opinion. This device allows me to plug-in to the output jack on an aircraft without the inconvenience of wires. It has several domestic uses, specifically provided a bluetooth interface to older audio equipment, PC's that don't have bluetooth, and (some) tablets. Does it work? Yes, no reservations. Fully charged, the battery was only 50% drained at the end of a 10 hour flight to London from Phoenix, AZ. I used this device in conjunction with my iPad mini, the aircraft infotainment system and even my PC at home. Binding was fast and effortless. Recommend you read the instructions because although binding and unbinding is easy (and works) the unit itself has a minimum of controls and you need to know what you're doing! I really can't speak to quality or range, but at least up to around ten to fifteen feet it was working fine, and sound quality was excellent without drop-out or interference. Can I listen to music while the unit is attached to a charger? Yes you can. This was a worry for me, especially since I forgot to recharge before the return trip. So I attached to a USB-C power bank and absolutely no problem, throughout charging, the unit worked fine. BTW, many airlines seem to be banning the use of power banks on or onto their aircraft - just another nuisance to check on before you fly! Do I know how much power is left? Yes, there are 4 white LED's which tell you how much charge you've got on the device. The top-most illuminated LED flashes until the next level is reached or the unit is fully charged. Finally, can two people listen to the same audio? Yes, my wife and I watched a video on the plane, with both of us wearing Bose NC headphones in bluetooth mode. The unit provides two, simultaneous links so for me that was the final box ticked. Some widgets are hard to use, but this one is well thought out and easy.
B**M
Works perfectly for downloaded movies on laptops for long flights
This relay works great with our laptops! The instructions were concise, clear, and both sets of our ear buds were very easy to pair and use with it. We can now watch our downloaded movies on our flights with each of us having our own set of earbuds instead of having to share one set, lol. We especially appreciated how the instructions boldly point out to turn off our phone Bluetooth during pairing because that causes 90% of problems...sure enough, that instantly worked. We also like the included charging cable, plane adaptor and sturdy zippered carrying case.
M**R
Works great, long battery charge, slight latency.
Works like a charm. Very slight latency so not ideal for gaming. But for watching movies on a plane via your bluetooth head set, it's perfect. Easily pairs with my Bose Quiet Comfort and Powerbeats Pro 2.
J**M
Generally good performance
This pairs well with most devices, but had problems with Bose QC earbuds. Latency is the lowest I have encountered with the right earbuds, but varies with others that are supposed to be ultra low latency. Battery life is around 15 hours between charges. Sounds quality is good.
D**.
Quality and easy to use
Worked great and very easy to use. The sound Quality and value were good. Used on a Delta flight. Longer range hasn’t been tested yet.
B**B
iPod classic bluetooth w/ Bose Revolve & Sonos speakers - easy, no latency, no skips, no static
Very seldom does "plug and play" work as seamlessly as promised . . . except this does! Using this to give an oldie but goodie iPod classic the ability to Bluetooth connect and play through a couple Bose Revolve and Sonos speakers. Seriously, this took less than 5 minutes to set up. Plug it into the iPod's headset jack, then plug it into an outlet. It came with about a 75% charge, but I wanted it to always be plugged into a power source since I plan on leaving it in place. Toggle the on button to on, then push the sync button on this transmitter and on the first speaker. Connected easily. Do the same with the second speaker. Connected just as easily. At this point, I paired the two Bose speakers with each other so they could play in either party or stereo mode. No matter which mode they're in, they play in sync with each other without lag, latency or static. So far, I've used this almost everyday since initial set up and there was never any issue with needing to re-pair or re-sync - - - all devices remembered each other (recognizing it as Avantree) and picked up just where they left off. It honestly took me more time dealing with the physical aspect of cord managing the charging cable (fishing the cable behind furniture so it's out of sight) than actual set up of the device. Comments: - note there is an actual on/off switch on the device. It's tiny and on the side of the transmitter, but that needs to be "on" in order to function. I don't know if it's necessary, but I also turn it off when I'm not using it just so it's not always actively sending out a signal. - happy surprise that there are also volume control buttons right along side the on/off switch. I don't need those in my situation, but if you're travelling or are using this as a portable transmitter, this is a handy bonus - it's amazingly teeny - - - about the size of a flash drive and smaller than an old school pack of gum - comes with a 2 prong headset jack, presumably for airplane use, but I think most airlines have gone to the single jack input as I honestly can't remember the last time I saw a double jack on a plane. - comes with a charging cable, but not a wall plug. - if you're taking this with you, it also comes with a compact case that everything fits into nicely
M**R
Failed in EvaAir
This worked perfectly on an older PC with a headphone jack. However, I could get this to work in an airline dual jack. It was on an Eva Air. I was able to confirm that the jack works if I use the provided wired headphones.
W**R
Great adapter.
This thing is super convenient, easy to pair with, has surprisingly good range, a good battery life, is small and convenient, and sounds great too. Got no static or anything. My only relatively small complaint is you can't unpair one of your connections without disturbing the other (as far as I know). You can only unpair both connections or just turn it off long enough to pair to something else. It's not big enough if an issue to be worth dropping a star over, but I thought I'd mention it.
T**U
Allzweckgerät
Der Adapter kam sehr gut verpackt an. Die Einrichtung und die Verbindung mit den Kopfhörern ging sehr fix. Zudem ist die Anleitung auch verständlich. Im Flugzeug konnten wir den Adapter testen. Ergebnis einfach sehr gut. Akku hält lange, Übertragung ohne Verzögerung und in guter Qualität. Das verbinden weiterer Kopfhörer auch einfach. Zudem kann man zwei Kopfhörer sogar gleichzeitig nutzen. Für den Preis super. Vor allem kann man es ja auch außerhalb vom Flugzeug nutzen. Definitiv klare Kaufempfehlung
C**R
No problem with connection. Works as advertised
Bought it for a recent long airplane ride from Dubai to Canada. Was Flying on ITA Airways. Didn't need to use because ITA allows direct bluetooth connection, but I tested it on my laptop and it worked as stated. Only problem is trying to remember the directions to connect/pair since I don't use it very often.
P**R
Justo lo que esperas
Funcionó justo como esperaba, no duden en comprar el artículo.
B**D
Excellent Bluetooth adapter for flights and travel
I picked up the Avantree Relay mainly for use on flights, and it’s been very reliable so far. Setup is simple and quick, pairing easily with my Bluetooth headphones. Once connected, the audio has been stable with no noticeable dropouts or lag, even during long flights. Sound quality is very good for a Bluetooth adapter, and it works well for movies, TV shows, and general audio without sync issues. The adapter itself is compact and lightweight, making it easy to carry in hand luggage or a pocket. Battery life has been more than sufficient for long journeys, and I’ve been able to use it across multiple flights without needing to recharge in between. Build quality feels solid, and the physical controls are easy to use without needing to look at the device. It also works well beyond flights — I’ve used it with gym equipment and other non‑Bluetooth audio sources with consistent results. Overall, this is a well‑designed, dependable Bluetooth adapter that does exactly what it’s meant to do. A great option if you want wireless headphones to work properly with airplane entertainment systems or other wired audio sources.
M**A
buena
muy buena compra, justo lo que necesitaba.
Trustpilot
1 month ago
3 weeks ago