---
product_id: 585534170
title: "Avantree Relay – Airplane Bluetooth Adapter for 2 AirPods or Headphones | Qualcomm aptX Adaptive, 25H Battery, Future-Proof Firmware Upgradable, 3.5mm AUX Audio Transmitter for Flight Travel & Gym"
brand: "avantree"
price: "57247CFA"
currency: XOF
in_stock: true
reviews_count: 13
category: "Avantree"
url: https://www.desertcart.sn/products/585534170-avantree-relay-airplane-bluetooth-adapter-for-2-airpods-or-headphones
store_origin: SN
region: Senegal
---

# Qualcomm aptX Adaptive codec Dual headphone Bluetooth streaming 25H battery life Avantree Relay – Airplane Bluetooth Adapter for 2 AirPods or Headphones | Qualcomm aptX Adaptive, 25H Battery, Future-Proof Firmware Upgradable, 3.5mm AUX Audio Transmitter for Flight Travel & Gym

**Brand:** avantree
**Price:** 57247CFA
**Availability:** ✅ In Stock

## Summary

> ✈️ Elevate your travel sound game — wireless freedom at 30,000 feet!

## Quick Answers

- **What is this?** Avantree Relay – Airplane Bluetooth Adapter for 2 AirPods or Headphones | Qualcomm aptX Adaptive, 25H Battery, Future-Proof Firmware Upgradable, 3.5mm AUX Audio Transmitter for Flight Travel & Gym by avantree
- **How much does it cost?** 57247CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/585534170-avantree-relay-airplane-bluetooth-adapter-for-2-airpods-or-headphones)

## Best For

- avantree enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Anywhere:** Includes dual 3.5mm airline adapter for instant compatibility with virtually every airplane seatback jack.
- • **Premium Qualcomm Sound:** Experience crystal-clear, low-latency audio with aptX Adaptive for superior wireless sound quality.
- • **Dual-Link Audio Sharing:** Seamlessly connect two Bluetooth headphones for shared in-flight entertainment or gym sessions.
- • **Uninterrupted 25-Hour Power:** Stay powered through your longest flights and workouts without a recharge.
- • **Future-Proof Firmware Updates:** Keep your device cutting-edge with ongoing firmware upgrades enhancing performance and compatibility.

## Overview

The Avantree Relay is a compact, portable Bluetooth transmitter designed to wirelessly stream audio from airplane entertainment systems or any 3.5mm AUX source to two Bluetooth headphones simultaneously. Powered by Qualcomm’s aptX Adaptive codec, it delivers stable, high-quality sound with minimal latency. Its robust 25-hour battery life and included dual-prong airline adapter make it an essential travel companion for professionals seeking seamless, shared audio experiences on flights and beyond. Firmware updates ensure it stays compatible with future devices, making it a smart, long-term investment for frequent flyers and active lifestyles.

## Description

Product Description Frequently Asked Question Q: Why is this more expensive than similar products? A: At Avantree, we use Qualcomm’s premium Bluetooth chip to deliver better sound, stable connection, lower latency, and stronger compatibility. Many lower-cost alternatives use basic chipsets with limited performance. Q: Can the Relay pair with my phone? A: No, the Relay is a transmitter, not a receiver. It is designed to send audio from devices like airplane entertainment systems to your Bluetooth headphones. It cannot connect to a phone. Dual Link The Relay’s intuitive LEDs allow you to easily connect up to two audio devices and share the audio. Included Adapter Connect to any plane with the double 3.5mm adapter – no need to purchase separately. Extended Playtime A battery life of up to 20 hours provides sufficient battery life to last you through any flight. Easy Setup Plug Plug the Relay into an in-flight entertainment system (use the adapter if necessary) or any other audio source with an AUX 3.5mm audio output jack. Power Turn both the Relay and your headphones on (some earbuds – such as AirPods – need to be powered off in order to place them in pairing mode.) Pair For first use, the Relay will automatically enter pairing mode. Place your headphones into pairing mode as well. Play Keep the devices close together and they'll connect. Press & hold the main button until the LED flashes blue & red to connect another pair. Dual 3.5mm Adapter Connect to any and every plane with the double 3.5mm adapter – no need to purchase separately. Dual 3.5mm Adapter Connect to any and every plane with the double 3.5mm adapter – no need to purchase separately. Volume adjustment Freely adjust the Relay’s volume. Note that your headphones’ and / or audio source’s volumes may need to be adjusted independently. Volume adjustment Freely adjust the Relay’s volume. Note that your headphones’ and / or audio source’s volumes may need to be adjusted independently. Connection indicator Easily pair and monitor the connection of up to two listening devices. Connection indicator Easily pair and monitor the connection of up to two listening devices. Battery level indicator Check your battery level at any time to make sure it’s sufficiently charged. Battery level indicator Check your battery level at any time to make sure it’s sufficiently charged. Multifunctional button Pair, reconnect, and display battery level with the multifunctional button. Multifunctional button Pair, reconnect, and display battery level with the multifunctional button. Will this work with a regular TV? As long as your TV has an AUX audio output jack, the Relay will work with it. Will this work with a regular TV? As long as your TV has an AUX audio output jack, the Relay will work with it. Will I get audio lag or lip-sync delays with my headphones? Your headphones must support either aptX Low Latency or aptX Adaptive in order to eliminate audio latency. Please note that most true wireless earbuds (such as AirPods) do not currently support these audio codecs. Will I get audio lag or lip-sync delays with my headphones? Your headphones must support either aptX Low Latency or aptX Adaptive in order to eliminate audio latency. Please note that most true wireless earbuds (such as AirPods) do not currently support these audio codecs. How are the volume levels? You should be able to reach sufficient volume levels by adjusting the volume on both the Relay, your headphones, and / or the audio source. How are the volume levels? You should be able to reach sufficient volume levels by adjusting the volume on both the Relay, your headphones, and / or the audio source. How long does it take to fully charge the adapter? It only takes 1.5 hours to fully charge the adapter. How long does it take to fully charge the adapter? It only takes 1.5 hours to fully charge the adapter. Can I connect my phone to the Relay via Bluetooth? No, as a transmitter, the Relay is designed to only connect to audio devices (such as your headphones or AirPods) via Bluetooth. Can I connect my phone to the Relay via Bluetooth? No, as a transmitter, the Relay is designed to only connect to audio devices (such as your headphones or AirPods) via Bluetooth. COMPARISON TABLE Avantree Relay Avantree SoundJet R1 Avantree Voyager

Review: 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.
Review: Great device - works without fail - Works perfectly. I connected it to the emirates headphone jack and was able to sync the audio from my movie and have my partner watch and listen simultaneously. Great device for if you travel frequently long haul and like to co watch movies with someone. It’s also useful for if you wanna share music with others on the go - however remember - if you have an iPhone with USB C - you need an aux to USB C adapter !

## Features

- 【Enjoy Wireless Audio on Airplanes】Plug Relay directly into a standard 3.5 mm seatback audio jack or use the included dual-prong airline adapter on compatible aircraft. This Bluetooth transmitter for airplane entertainment streams in-flight movies and music wirelessly to AirPods, Bose, Sony, and other Bluetooth headphones.
- 【Clear, Stable Qualcomm Audio】 Powered by a Qualcomm chipset with aptX Adaptive and aptX HD support for clear, stable wireless sound while flying, working out, or traveling. aptX features require compatible headphones; AirPods use their standard Bluetooth codec.
- 【25-Hour Battery with Easy Controls】 Enjoy up to 25 hours of playtime with built-in volume buttons and a clear battery indicator—ideal for long flights, workouts, and frequent travel.
- 【Not For TVs, Phones, Or Assistive Listening Devices】 Not compatible with TVs, assistive listening devices, musical instruments, or real-time monitoring. Transmitter only – does not pair with phones or tablets.
- 【Made for Today, Upgradeable for Tomorrow】 Unlike basic adapters that stay the same after purchase, Relay supports firmware updates that can improve headphone compatibility, connection stability, and overall performance over time.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CL9C95T9 |
| Audio Input | 3.5 mm AUX |
| Audio Output Mode | Stereo |
| Audio Output Type | Headphone |
| Battery Charge Time | 2 Hours |
| Battery Types | Lithium-Polymer |
| Battery Weight | 4.4 Grams |
| Best Sellers Rank | 441 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 3 in Audio & Video Adapters |
| Bluetooth support? | Yes |
| Box Contents | Dual 3.5mm Male to 3.5mm Female Adapter, Relay Transmitter, Traveling Pouch, USB Type C Charging Cable (1.5ft / 0.5m) |
| Brand | Avantree |
| Brand Name | Avantree |
| Colour | White |
| Compatibility Options | [Airpods, QuietComfort 45, WH-1000XM5, Momentum 4 and many other devices.] |
| Compatible Devices | Headphone, Airline Entertainment System, Gym Equipment |
| Connectivity Technology | Auxiliary, Bluetooth |
| Connectivity technology | Auxiliary , Bluetooth |
| Connector Type Used on Cable | Auxiliary |
| Control Method | Push Button |
| Controller Type | Hand Control |
| Country of Origin | China |
| Customer Reviews | 4.4 out of 5 stars 6,393 Reviews |
| Data Link Protocol | Bluetooth |
| Enclosure Material | Acrylonitrile Butadiene Styrene (ABS) |
| Hardware Interface | Bluetooth, Bluetooth 5 |
| Includes Remote | No |
| Installation Type | Portable |
| Lithium Battery Energy Content | 0.8 Watt Hours |
| Lithium Battery Weight | 4 Grams |
| Manufacturer | Avantree |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Media Types | bluetooth |
| Model Name | Relay |
| Mounting Type | airplane |
| Number of Batteries | 1 Lithium Polymer batteries required. |
| Number of Channels | 2 |
| Number of Lithium-ion Cells | 1 |
| Number of Ports | 2 |
| Outer Material | Acrylonitrile butadiene styrene (ABS) |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Product Features | aptX Low Latency, Supports 2 Headphones |
| Rechargeable Battery Included | Yes |
| Special feature | aptX Low Latency, Supports 2 Headphones |
| Supported Application | Any audio application or format supported by the connected airplane entertainment system |
| Supported Standards | Bluetooth 5.3, Qualcomm aptX Adaptive |
| Wireless Compability | Bluetooth |

## Product Details

- **Brand:** Avantree
- **Colour:** White
- **Compatible devices:** Headphone, Airline Entertainment System, Gym Equipment
- **Data link protocol:** Bluetooth
- **Hardware interface:** Bluetooth, Bluetooth 5
- **Item weight:** 4.5 Ounces
- **Manufacturer:** Avantree

## Images

![Avantree Relay – Airplane Bluetooth Adapter for 2 AirPods or Headphones | Qualcomm aptX Adaptive, 25H Battery, Future-Proof Firmware Upgradable, 3.5mm AUX Audio Transmitter for Flight Travel & Gym - Image 1](https://m.media-amazon.com/images/I/41+EuzcVwBL.jpg)
![Avantree Relay – Airplane Bluetooth Adapter for 2 AirPods or Headphones | Qualcomm aptX Adaptive, 25H Battery, Future-Proof Firmware Upgradable, 3.5mm AUX Audio Transmitter for Flight Travel & Gym - Image 2](https://m.media-amazon.com/images/I/616CHS3S29L.jpg)
![Avantree Relay – Airplane Bluetooth Adapter for 2 AirPods or Headphones | Qualcomm aptX Adaptive, 25H Battery, Future-Proof Firmware Upgradable, 3.5mm AUX Audio Transmitter for Flight Travel & Gym - Image 3](https://m.media-amazon.com/images/I/51oGJebd00L.jpg)
![Avantree Relay – Airplane Bluetooth Adapter for 2 AirPods or Headphones | Qualcomm aptX Adaptive, 25H Battery, Future-Proof Firmware Upgradable, 3.5mm AUX Audio Transmitter for Flight Travel & Gym - Image 4](https://m.media-amazon.com/images/I/514OU+ah-vL.jpg)
![Avantree Relay – Airplane Bluetooth Adapter for 2 AirPods or Headphones | Qualcomm aptX Adaptive, 25H Battery, Future-Proof Firmware Upgradable, 3.5mm AUX Audio Transmitter for Flight Travel & Gym - Image 5](https://m.media-amazon.com/images/I/51MhKNzHi0L.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Will this work with a regular TV?**
A: As long as your TV has an AUX audio output jack, the Relay will work with it.

**Q: Will I get audio lag or lip-sync delays with my headphones?**
A: Your headphones must support either aptX Low Latency or aptX Adaptive in order to eliminate audio latency. Please note that most true wireless earbuds (such as AirPods) do not currently support these audio codecs.

**Q: How are the volume levels?**
A: You should be able to reach sufficient volume levels by adjusting the volume on both the Relay, your headphones, and / or the audio source.

**Q: How long does it take to fully charge the adapter?**
A: It only takes 1.5 hours to fully charge the adapter.

**Q: Can I connect my phone to the Relay via Bluetooth?**
A: No, as a transmitter, the Relay is designed to only connect to audio devices (such as your headphones or AirPods) via Bluetooth.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Bluetooth adapter for flights and travel
*by B***D on 15 April 2026*

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.

### ⭐⭐⭐⭐⭐ Great device - works without fail
*by M***I on 4 July 2026*

Works perfectly. I connected it to the emirates headphone jack and was able to sync the audio from my movie and have my partner watch and listen simultaneously. Great device for if you travel frequently long haul and like to co watch movies with someone. It’s also useful for if you wanna share music with others on the go - however remember - if you have an iPhone with USB C - you need an aux to USB C adapter !

### ⭐⭐⭐⭐ works with laptop, but struggled to connect with headphones
*by C***B on 27 February 2025*

worked well with other connections, but struggled to get these to connect at all with my Sony headphones on the plane, worked with beats ok

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-07-23*