---
product_id: 585534170
title: "Relay - Airplane Bluetooth 5.3 Adapter with Qualcomm aptX Adaptive, Supports 2 AirPods or Headphones, 20H Playtime, 3.5mm AUX Jack Wireless Audio Transmitter for Planes, Airline, Travel"
brand: "avantree"
price: "£40.71"
currency: GBP
in_stock: true
reviews_count: 13
category: "Avantree"
url: https://www.desertcart.co.uk/products/585534170-relay-airplane-bluetooth-5-3-adapter-with-qualcomm-aptx-adaptive
store_origin: GB
region: United Kingdom
---

# Dual headphone sharing for shared experiences Bluetooth 5.3 for crystal-clear audio 20H battery life for nonstop entertainment Relay - Airplane Bluetooth 5.3 Adapter with Qualcomm aptX Adaptive, Supports 2 AirPods or Headphones, 20H Playtime, 3.5mm AUX Jack Wireless Audio Transmitter for Planes, Airline, Travel

**Brand:** avantree
**Price:** £40.71
**Availability:** ✅ In Stock

## Summary

> ✈️ Elevate your travel audio game—wireless freedom that keeps you connected and in the moment!

## Quick Answers

- **What is this?** Relay - Airplane Bluetooth 5.3 Adapter with Qualcomm aptX Adaptive, Supports 2 AirPods or Headphones, 20H Playtime, 3.5mm AUX Jack Wireless Audio Transmitter for Planes, Airline, Travel by avantree
- **How much does it cost?** £40.71 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/585534170-relay-airplane-bluetooth-5-3-adapter-with-qualcomm-aptx-adaptive)

## 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

- • **Dual Headphone Sharing:** Connect two Bluetooth headphones simultaneously—perfect for bonding over movies or music on the go.
- • **Epic 20-Hour Battery Life:** Power through long-haul flights or intense workouts without worrying about recharging.
- • **Seamless Bluetooth 5.3 Connectivity:** Experience ultra-stable, high-fidelity audio with Qualcomm aptX Adaptive technology.
- • **Universal Compatibility with Top Brands:** Effortlessly pairs with AirPods, Bose, Sony, Beats, and most Bluetooth headphones for ultimate convenience.
- • **Travel-Ready Design with Intuitive Controls:** Compact, lightweight, and equipped with easy onboard buttons plus a travel pouch—your perfect in-flight companion.

## Overview

The Avantree Relay is a cutting-edge Bluetooth 5.3 audio transmitter designed for travelers and fitness enthusiasts. It streams audio wirelessly from 3.5mm sources like airplane entertainment systems or gym machines to Bluetooth headphones, supporting two devices simultaneously. Featuring Qualcomm aptX Adaptive for premium sound quality and a robust 20-hour battery, it’s compatible with leading headphone brands and built for effortless pairing and control on the go.

## Description

Stream audio from in-flight or gym to your Bluetooth headphones with this stable, high-quality adapter. Compatible with AirPods, Sony, Bose, and more.

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: Good Value - Works really well, fantastic for a flight and good price too, sound quality is good and it’s super compact and durable, no noise and it’s very versatile.

## Features

- 【Built For Airplane Seat Screens】 This Bluetooth adapter connects directly to airplane entertainment systems using a standard 3.5mm AUX jack. Skip airline cords and low-quality wired headsets for a cleaner wireless experience in the air.
- 【Connect 2 Headphones On Flights】 Pair two Bluetooth headphones or AirPods at the same time and enjoy in-flight entertainment together. A smarter wireless upgrade for couples or travel partners who want to watch side by side on airplanes.
- 【Not For TVs, Phones, Or Musical Instruments】Not compatible with TVs. Bluetooth transmitter only — does not pair with phones or tablets. Not suitable for musical instruments.
- 【Clear, Confident Travel Audio】 Powered by Qualcomm aptX Adaptive technology to deliver balanced sound and dependable wireless performance throughout your flight.
- 【25 Hours Of Reliable Playtime】 Enjoy up to 25 hours of wireless listening on a single charge—ideal for long international flights and frequent travelers.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CL9C95T9 |
| Best Sellers Rank | 314 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 3 in Audio & Video Adapters |
| 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 Name | Avantree |
| Color | White |
| Compatible Devices | Headphone, Airline Entertainment System, Gym Equipment |
| Country of Origin | China |
| Customer Reviews | 4.4 4.4 out of 5 stars (5,893) |
| Data Link Protocol | Bluetooth |
| Hardware Interface | Bluetooth, Bluetooth 5 |
| Item Weight | 4.5 Ounces |
| Manufacturer | Avantree |
| Manufacturer Part Number | BTTC-218-W |
| Model Number | BTTC-218-W |
| Unit Count | 5.2911 gram |

## 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

![Relay - Airplane Bluetooth 5.3 Adapter with Qualcomm aptX Adaptive, Supports 2 AirPods or Headphones, 20H Playtime, 3.5mm AUX Jack Wireless Audio Transmitter for Planes, Airline, Travel - Image 1](https://m.media-amazon.com/images/I/41+EuzcVwBL.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.

### ⭐⭐⭐⭐⭐ Good Value
*by V***S on 6 April 2026*

Works really well, fantastic for a flight and good price too, sound quality is good and it’s super compact and durable, no noise and it’s very versatile.

### ⭐⭐⭐⭐ Would be five stars but for....
*by G***S on 13 October 2024*

Works really nicely. Instructions are clear. Thanks for thinking to include a nice little travel bag. Would be five stars, but for the packaging unrecycleable at least in my location.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.co.uk/products/585534170-relay-airplane-bluetooth-5-3-adapter-with-qualcomm-aptx-adaptive](https://www.desertcart.co.uk/products/585534170-relay-airplane-bluetooth-5-3-adapter-with-qualcomm-aptx-adaptive)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-28*