Avantree Relay Airplane Bluetooth Adapter 20H

This compact airplane Bluetooth adapter streams inflight audio to wireless headphones, making long flights and gym sessions more comfortable and private. It connects to seatback systems via the 3.5mm jack and supports dual listening so two people can share a film or track. ✈️

Short battery life is rarely a worry thanks to claimed 20H playtime according to the manufacturer. The unit pairs quickly and keeps controls simple, with onboard buttons for volume and pairing. Bear in mind that it is not designed for phones, speakers or car stereos, and pairing stability may vary with some models.

The essentials

The Relay is aimed at frequent travellers and anyone who uses public audio outputs. It reduces cable fuss and lets you use AirPods or other Bluetooth headphones on planes and treadmills. The design keeps a low profile in a bag and the controls are straightforward to use. For sharing, two headsets can connect simultaneously so companions can watch the same content together. 🎧

Tech summary

• Reference: Avantree Relay
• Type: Wireless audio transmitter
• Connectivity: Bluetooth 5.3, 3.5mm AUX
• Compatibility: AirPods, Sony, Bose, Beats and most Bluetooth headphones, not compatible with phones, speakers or car stereos
• Battery life: 20 hours

What stands out

The Relay uses aptX Adaptive for reduced latency and improved audio stability when supported by your headphones. It also employs Bluetooth 5.3 which helps range and connection reliability in busy environments. Controls are intuitive and the LED indicators simplify status checks. A modest caveat is that pairing behaviour differs between headset brands, and you may need to re-pair occasionally.

Practical tips

Charge before travel and carry a short 3.5mm cable as a backup. Use the unit near the seatback jack to avoid stretching cables. If you plan to share audio often, test both headphones together at home to confirm synchronisation. The 20H playtime makes it suited to long hauls and extended workouts, but heavy daily use will require more frequent charging. ✈️