--- product_id: 582838981 title: "Relay - Premium Airplane Bluetooth Adapter with Advanced Qualcomm Chipset, 2 Headphones Support, 25hrs Play Time, aptX Adaptive & HD Audio Transmitter for Airpods, Bose & Travel Flight" brand: "avantree" price: "HK$459" currency: HKD in_stock: true reviews_count: 8 category: "Avantree" url: https://www.desertcart.hk/products/582838981-relay-premium-airplane-bluetooth-adapter-with-advanced-qualcomm-chipset-2 store_origin: HK region: Hong Kong --- # Qualcomm aptX Adaptive chipset Dual headphone pairing 25-hour battery life Relay - Premium Airplane Bluetooth Adapter with Advanced Qualcomm Chipset, 2 Headphones Support, 25hrs Play Time, aptX Adaptive & HD Audio Transmitter for Airpods, Bose & Travel Flight **Brand:** avantree **Price:** HK$459 **Availability:** ✅ In Stock ## Summary > ✈️ Elevate your in-flight audio game—wireless freedom at 35,000 feet! ## Quick Answers - **What is this?** Relay - Premium Airplane Bluetooth Adapter with Advanced Qualcomm Chipset, 2 Headphones Support, 25hrs Play Time, aptX Adaptive & HD Audio Transmitter for Airpods, Bose & Travel Flight by avantree - **How much does it cost?** HK$459 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/582838981-relay-premium-airplane-bluetooth-adapter-with-advanced-qualcomm-chipset-2) ## 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 - • **Compact & Travel-Ready:** Lightweight and portable design fits effortlessly in your carry-on, with fast USB-C charging to keep you powered up. - • **Ultra-Long Battery Life:** Enjoy up to 25 hours of uninterrupted wireless audio on a single charge, ideal for long-haul flights and beyond. - • **Premium Qualcomm Audio Tech:** Experience crystal-clear, low-latency sound with advanced aptX Adaptive codec for HD audio quality. - • **Seamless Dual Audio Sharing:** Connect two Bluetooth headphones simultaneously for shared in-flight entertainment—perfect for travel partners. - • **Plug & Play Airplane Compatibility:** Directly connects to airplane seat screens via 3.5mm AUX jack—ditch tangled cords and embrace wireless freedom. ## Overview The Avantree Relay is a premium Bluetooth transmitter designed specifically for airplane entertainment systems. Featuring Qualcomm's aptX Adaptive chipset, it delivers high-definition, low-latency audio to two Bluetooth headphones simultaneously. With a robust 25-hour battery life and simple 3.5mm AUX connectivity, it transforms wired in-flight audio into a seamless wireless experience, perfect for frequent travelers and audiophiles alike. ## Description desertcart.com: Avantree Relay - Premium Airplane Bluetooth Adapter with Advanced Qualcomm Chipset, 2 Headphones Support, 25hrs Play Time, aptX Adaptive & HD Audio Transmitter for Airpods, Bose & Travel Flight : Electronics Review: 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. Review: Great price, portable, and easy to use - It supplies blue tooth for 22 hours on a full charge. Works great and easy to use. Highly portable. Great product at a great price. USB charging is fast. Any electronic sound device with standard mini headphone jack will work. I used an adapter for the old style headphone jack. ## 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 | #1 in MP3 Player Bluetooth Transmitters | | Brand | Avantree | | Color | 2-White | | Compatible Devices | Headphone, Airline Entertainment System, Gym Equipment | | Customer Reviews | 4.4 out of 5 stars 5,790 Reviews | | Data Link Protocol | Bluetooth | | Hardware Interface | Bluetooth, Bluetooth 5 | | Item Weight | 4.5 Ounces | | Manufacturer | Avantree | | Mfr Part Number | BTTC-218-W | | Model Number | BTTC-218-W | | Unit Count | 5.2911 Ounce | | Warranty Description | 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 | ## Product Details - **Brand:** Avantree - **Color:** 2-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 - Premium Airplane Bluetooth Adapter with Advanced Qualcomm Chipset, 2 Headphones Support, 25hrs Play Time, aptX Adaptive & HD Audio Transmitter for Airpods, Bose & Travel Flight - 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 ### ⭐⭐⭐⭐⭐ Ideal for flying with bluetooth headphones; a well thought out product *by A***L on November 12, 2025* 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. ### ⭐⭐⭐⭐⭐ Great price, portable, and easy to use *by J***N on March 13, 2026* It supplies blue tooth for 22 hours on a full charge. Works great and easy to use. Highly portable. Great product at a great price. USB charging is fast. Any electronic sound device with standard mini headphone jack will work. I used an adapter for the old style headphone jack. ### ⭐⭐⭐⭐⭐ Great adapter. *by W***R on February 11, 2026* 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. ## Frequently Bought Together - Avantree Relay - Premium Airplane Bluetooth 5.3 Adapter, Supports 2 AirPods or Headphones with aptX Adaptive, 3.5mm AUX Jack Wireless Audio Transmitter for Planes, Airline, Travel, TV - SARISUN Travel Pillows for Airplanes, Airplane Pillow for Long Flight, Airplane Head Strap with Eye Mask for Sleep, Travel Neck Pillow for Car Road Trip, 360° Support Headrest, Stop Bobblehead, Black - Airplane Pockets Airplane Tray Table Cover with Pocket Organizer | Seat Back Organizer & Storage for Personal Items | Travel Accessories | Clean and Convenient Airplane Travel Essentials for Flying --- ## 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.hk/products/582838981-relay-premium-airplane-bluetooth-adapter-with-advanced-qualcomm-chipset-2](https://www.desertcart.hk/products/582838981-relay-premium-airplane-bluetooth-adapter-with-advanced-qualcomm-chipset-2) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-04-22*