--- product_id: 690460267 title: "Relay - Airplane Bluetooth Adapter for 2 AirPods or Headphones" brand: "avantree" price: "¥12390" currency: JPY in_stock: true reviews_count: 13 url: https://www.desertcart.jp/products/690460267-relay-airplane-bluetooth-adapter-for-2-airpods-or-headphones store_origin: JP region: Japan --- # Qualcomm aptX Adaptive codec Dual headphone connection 25H battery life Relay - Airplane Bluetooth Adapter for 2 AirPods or Headphones **Brand:** avantree **Price:** ¥12390 **Availability:** ✅ In Stock ## Summary > ✈️ Elevate your travel sound game—wireless freedom at 30,000 feet! ## Quick Answers - **What is this?** Relay - Airplane Bluetooth Adapter for 2 AirPods or Headphones by avantree - **How much does it cost?** ¥12390 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/690460267-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 - • **Ultra-Long 25-Hour Battery:** Power through long flights and workouts without worrying about recharging interruptions. - • **Seamless Dual Audio Sharing:** Connect two Bluetooth headphones or AirPods simultaneously for shared in-flight entertainment or gym sessions. - • **Crystal-Clear Qualcomm Sound:** Experience premium, low-latency audio with aptX Adaptive and aptX HD support for stable, high-fidelity wireless streaming. - • **Future-Proof Firmware Updates:** Stay ahead with ongoing firmware upgrades that enhance headphone compatibility and connection stability over time. - • **Universal Airplane Compatibility:** Plug directly into any 3.5mm seatback jack or use the included dual-prong adapter for hassle-free wireless audio on nearly all flights. ## Overview The Avantree Relay is a premium Bluetooth transmitter designed for airplane entertainment systems and other 3.5mm AUX audio sources. Featuring Qualcomm’s aptX Adaptive codec, it delivers clear, low-latency sound to two Bluetooth headphones simultaneously. With a robust 25-hour battery life and included airline adapter, it ensures uninterrupted wireless audio on long flights and workouts. Firmware updates keep it future-ready, making it the ultimate travel companion for audiophiles and multitaskers alike. ## Description 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. 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. The Relay’s intuitive LEDs allow you to easily connect up to two audio devices and share the audio. Connect to any plane with the double 3.5mm adapter – no need to purchase separately. A battery life of up to 20 hours provides sufficient battery life to last you through any flight. 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. 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.) For first use, the Relay will automatically enter pairing mode. Place your headphones into pairing mode as well. Keep the devices close together and they'll connect. Press & hold the main button until the LED flashes blue & red to connect another pair. 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. 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. 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. Avantree Relay Avantree SoundJet R1 Avantree SoundJet R1 Avantree Voyager ## 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 | B0DMFB3VJZ | | Audio Input | 3.5mm AUX | | Audio Output Mode | Stereo | | Audio Output Type | 3.5mm, Bluetooth | | Battery Types | Lithium-Polymer | | Battery Weight | 4.4 Grams | | Best Sellers Rank | 420 in Electronics & Photo (See Top 100 in Electronics & Photo) 2 in Audio & Video Adapters | | Bluetooth Support | Yes | | Box Contents | Relay Bluetooth Transmitter, Type C Charging Cable | | Brand Name | Avantree | | Colour | Midnight Blue | | Compatibility Options | Headphones, Airline Entertainment System | | Compatible Devices | Airline Entertainment System, Gym Machine, Headphone | | Connectivity Technology | AUX | | Connector Type Used On Cable | Auxiliary | | Control Method | Touch | | Country Of Origin | China | | Customer Reviews | 4.4 4.4 out of 5 stars (6,526) 4.4 out of 5 stars | | Data Link Protocol | Bluetooth | | Enclosure Material | Acrylonitrile Butadiene Styrene (ABS) | | Hardware Interface | Bluetooth 5 | | Includes Remote | No | | Installation Type | Wired | | Lithium Battery Energy Content | 0.8 Watt Hours | | Lithium Battery Weight | 4 Grams | | Manufacturer | Avantree | | Media Types | bluetooth | | Model Name | Relay | | Number Of Batteries | 1 Lithium Polymer batteries required. | | Number Of Channels | 2 | | Number Of Lithium Ion Cells | 1 | | Power Source | Battery Powered | | Product Features | Connect 2 headphones or AirPods simultaneously with aptX-Adaptive & Low Latency support | | Product Warranty | Warranty - 24 months (product registration to cover first 12m return shipment cost) | Extensive Support: Chat, Email, Phone, Online Clinic, Video Tutorials, FAQ and Registration - avantree.com/support | | Rechargeable Battery Included | Yes | | Supported Application | Any audio application supporting Bluetooth and 3.5mm AUX output | | Supported Standards | Bluetooth 5.3, aptX-Adaptive, aptX-Low Latency | | Unit Count | 1.0 count | | Wireless Compability | Bluetooth | ## Product Details - **Brand:** Avantree - **Colour:** Midnight Blue - **Connectivity technology:** AUX - **Power source:** Battery Powered - **Special feature:** Connect 2 headphones or AirPods simultaneously with aptX-Adaptive & Low Latency support ## Images ![Relay - Airplane Bluetooth Adapter for 2 AirPods or Headphones - Image 1](https://m.media-amazon.com/images/I/41E+iBehgSL.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 on Reviewed in the United Kingdom 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. ### ⭐⭐⭐⭐⭐ Worked Flawlessly on Two Virgin Atlantic Flights *by on Reviewed in the United Kingdom 3 August 2026* I bought the Avantree Relay for a return flight with Virgin Atlantic and used it with my Sony WH CH520 wireless Bluetooth headphones. It worked brilliantly on both flights.On the outbound flight, the aircraft had Bluetooth connectivity, but it kept disconnecting, which became really frustrating. As soon as I plugged in the Avantree Relay, my headphones stayed connected for the entire 11 hour flight without a single issue.On the return flight, I was on an older aircraft that did not have Bluetooth at all, so the Relay was essential. The airline does provide wired headphones, but the sound quality is not great, and I much prefer using my own headphones as they block out more background noise and are far more comfortable.I only charged the Relay before each flight, and the battery easily lasted the entire journey with plenty of power to spare.It was simple to set up, reliable throughout both flights, and made a huge difference to my in flight entertainment. I would definitely recommend it to anyone who wants to use their own wireless headphones when flying. ### ⭐⭐⭐⭐ Handy Bluetooth transmitter for aircraft flights *by on Reviewed in the United Kingdom 1 January 2024* Fed up with using airline headphones which are poor quality and often broken, well this transmitter allows you to use up to two pairs of your own headphones same time. I fly a lot for work and these seem great.Only tried on laptop so far, but will work on any source with a 3.5mm earphone socket. Only gave 4* not 5 as the plug is straight, not 90 degrees, so in some airline seats could be an issue. Also comes with 2pin airline type adapter ## Frequently Bought Together - Avantree Relay - Airplane Bluetooth 5.3 Adapter with Qualcomm aptX Adaptive, Supports 2 AirPods or Headphones, 20Hr Playtime, 3.5mm AUX Wireless Audio Transmitter for Travel Flight, Airline, Gym, TV - Bose QuietComfort Bluetooth Headphones, Wireless Headphones with Active Over Ear Noise Cancelling and Mic, Deep Bass, Up to 24 Hours of Playtime, Twilight Blue - Limited Edition Color --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/690460267-relay-airplane-bluetooth-adapter-for-2-airpods-or-headphones](https://www.desertcart.jp/products/690460267-relay-airplane-bluetooth-adapter-for-2-airpods-or-headphones) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-23*