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Compact white Bluetooth adapter with 3.5 mm plug and volume buttons

MAONO

MAONO Relay Airplane Bluetooth Adapter 25H 3.5mm

SKU CH-9B8B-1CA3T

Connects to 3.5 mm AUX ports to stream audio wirelessly to two headphones with Qualcomm aptX Adaptive for up to 25 hours

  • TypeEarbud & In-Ear Headphones
  • Streams in-flight audio to two Bluetooth headphones via 3.5 mm AUX
  • Qualcomm aptX Adaptive delivers clear stable wireless sound
  • Firmware-upgradeable design improves compatibility and stability over time
  • 25 hours battery life with built-in volume controls and indicator
  • Designed for airplane seats and gym use not TVs or phones

Airplane Seat Audio Adapter

Connect the Relay adapter to any 3.5 mm seatback jack and stream in-flight entertainment to two Bluetooth headphones or AirPods simultaneously. A Qualcomm chip provides aptX Adaptive and aptX HD audio for clear wireless sound during flights, gym sessions or travel. This transmitter-only device does not pair with phones, tablets, TVs or hearing aids.

Sustained Travel Performance

The built-in battery delivers up to 25 hours of continuous playtime on a single charge, covering long-haul flights and extended workouts without needing a recharge. On-board volume buttons and a clear battery indicator allow quick adjustments while the adapter runs, maintaining stable dual-device connections throughout the session. Firmware updates improve compatibility and connection stability over time.

Transmitter-Only Constraint

Relay works exclusively as a Bluetooth transmitter from a 3.5 mm source and cannot receive audio from phones, tablets or TVs. Buyers who need a two-way headset for calls or a receiver for their home stereo should choose a different device.

Highlights

  • Streams in-flight audio to two Bluetooth headphones via 3.5 mm AUX
  • Qualcomm aptX Adaptive delivers clear stable wireless sound
  • Firmware-upgradeable design improves compatibility and stability over time
  • 25 hours battery life with built-in volume controls and indicator
  • Designed for airplane seats and gym use not TVs or phones

Specifications

TypeEarbud & In-Ear Headphones

Questions about this item

How long does the 25 hour battery last during a full day of travel use?

The built-in battery provides up to 25 hours of playtime, enough for long flights or extended gym sessions without recharging.

Which headphone jack does the adapter plug into for airplane screens?

It connects through a standard 3.5 mm AUX jack found on most airline seatback entertainment systems.

Will this transmitter work with my older wired headphones that use a 3.5 mm plug?

No, the Relay is a Bluetooth transmitter only and does not accept wired headphones; it streams audio to Bluetooth earbuds or headphones.

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