--- product_id: 715904543 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: "$91.29" currency: USD in_stock: true reviews_count: 5 category: "Avantree" url: https://www.desertcart.us/products/715904543-avantree-relay-airplane-bluetooth-adapter-for-2-airpods-or-headphones store_origin: US region: United States of America --- # Qualcomm aptX Adaptive codec Dual headphone support 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:** $91.29 **Availability:** ✅ In Stock ## Summary > ✈️ Elevate your travel soundscape with wireless freedom and flawless clarity! ## 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?** $91.29 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/715904543-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:** Easily connects to any 3.5mm audio jack, including airplane seatbacks and gym machines, transforming wired audio into wireless freedom. - • **Crystal-Clear Qualcomm Sound:** Experience premium aptX Adaptive and aptX HD audio for stable, low-latency, high-fidelity sound on compatible headphones. - • **Seamless Dual Audio Streaming:** Connect two Bluetooth headphones simultaneously for shared in-flight entertainment or gym sessions. - • **Future-Proof Firmware Upgrades:** Stay ahead with ongoing firmware updates that enhance compatibility and performance over time. - • **Endurance That Outlasts Your Journey:** Up to 25 hours of continuous playback ensures uninterrupted wireless audio from takeoff to touchdown and beyond. ## Overview The Avantree Relay is a premium Bluetooth transmitter designed for airplane entertainment systems and other 3.5mm audio sources. Featuring Qualcomm aptX Adaptive codec for superior sound quality, it supports simultaneous connection of two Bluetooth headphones and offers an impressive 25-hour battery life. Its firmware is upgradeable, ensuring future compatibility and enhanced performance. Compact and easy to use, it transforms wired audio into wireless convenience for travel, workouts, and beyond. ## Description Avantree Relay - Premium Airplane Bluetooth Adapter with Advanced Qualcomm Chipset & aptX Adaptive, Dual Headphones Support, 25hrs Play Time, HD Audio Transmitter for AirPods, Bose & Travel Flight Review: 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 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. ## 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. - 【Not For TVs, Phones, Or Hearing Aids】 Not compatible with TVs, hearing aids, musical instruments, or real-time monitoring. Transmitter only – does not pair with phones or tablets. - 【Not for TVs, Phones, or Hearing Aids】 Not compatible with TVs, hearing aids, 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 | | Additional Features | aptX Low Latency, supports 2 headphones | | Audio Input | 3.5mm AUX | | Audio Output Mode | Stereo | | Audio Output Type | 3.5mm, Bluetooth | | Battery Type | Lithium-Polymer | | Battery Weight | 4.4 Grams | | Best Sellers Rank | #20,700 in Electronics ( See Top 100 in Electronics ) #211 in Headphone Adapters | | Bluetooth support? | Yes | | Brand | Avantree | | Built-In Media | Relay Bluetooth Transmitter | | Color | blue | | Colour | blue | | Compatibility Options | Headphones, Airline Entertainment System | | Compatible Devices | Airline Entertainment System, Gym Machine, Headphone | | Connectivity Technology | Bluetooth | | Connectivity technology | Bluetooth | | Connector Type Used on Cable | Auxiliary | | Control Method | Touch | | Customer Reviews | 4.4 out of 5 stars 2,008 Reviews | | Data Link Protocol | Bluetooth | | Enclosure Material | Acrylonitrile Butadiene Styrene (ABS) | | Hardware Interface | Bluetooth 5 | | Includes Remote | No | | Installation Type | wired | | Lithium Battery Weight | 4 Grams | | Lithium-Battery Energy Content | 0.8 Watt Hours | | Manufacturer | Avantree | | Material | Acrylonitrile Butadiene Styrene (ABS) | | Model Name | BTTC-218 | | Number of Batteries | 1 Lithium Polymer batteries required. | | Number of Channels | 2 | | Number of Lithium-ion Cells | 1 | | Power Source | Battery Powered | | Power source | Battery Powered | | Rechargeable Battery Included | Yes | | Special features | aptX Low Latency, supports 2 headphones | | Supported Application | Any application with 3.5mm audio output | | Supported Media Type | bluetooth | | Supported Standards | Bluetooth 5.3, aptX Adaptive, aptX Low Latency | | Unit Count | 1.0 Count | | Wireless Compability | Bluetooth | ## Product Details - **Brand:** Avantree - **Connectivity technology:** Bluetooth - **Material:** Acrylonitrile Butadiene Styrene (ABS) - **Power source:** Battery Powered - **Special features:** aptX Low Latency, supports 2 headphones ## 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/41E+iBehgSL.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/61QW0bnJV4L.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/61mulwT8p0L.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/51C+SFUi9nL.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/71bk4pK9gSL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Allzweckgerät *by T***U on 7 December 2025* 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 ### ⭐⭐⭐⭐⭐ 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. ### ⭐⭐⭐⭐⭐ buena *by M***A on 5 August 2025* muy buena compra, justo lo que necesitaba. ## 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.us/products/715904543-avantree-relay-airplane-bluetooth-adapter-for-2-airpods-or-headphones](https://www.desertcart.us/products/715904543-avantree-relay-airplane-bluetooth-adapter-for-2-airpods-or-headphones) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-21*