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Compact rectangular Bluetooth 5.4 adapter with matte finish and 3.5mm jack

Gemini C83Pro Bluetooth 5.4 Transmitter Receiver Aux Adapter

SKU CH-DD5T-YQNQA

Bluetooth 5.4 transmitter and receiver adds wireless audio to any 3.5 mm jack device, supports dual headphones and runs 11 hours on a charge

  • Power drawBattery Powered, 5 V DC, 0.1 Wh
  • Accessory categoryBluetooth airplane adaptor
  • ModulationBluetooth, bluetooth, AUX
  • Team affiliation1 Piece
  • Wireless bandsBluetooth 5.4, bluetooth
  • Wireless rangeBluetooth car aux adapters
  • Bluetooth 5.4 delivers stable wireless audio up to two headphones simultaneously
  • 11-hour battery life powers through long-haul flights without recharging
  • 5 mm jack plugs directly into airplane entertainment systems for instant pairing
  • Dual TX and RX modes connect TVs, PCs, car stereos or gym equipment
  • Built-in noise-cancelling microphone enables clear hands-free calls on the go

Flight-Ready Wireless Adapter

The Gemini C83Pro is a Bluetooth 5.4 transmitter and receiver built for travellers who want to use their own headphones on aeroplane entertainment systems. It plugs into any 3.5 mm jack and streams audio wirelessly. The adapter also works as a receiver to add Bluetooth to older car stereos or home speakers. Battery life reaches 11 hours on a single charge.

Dual-Link Simultaneous Streaming

The single specification that decides fit is the ability to connect two Bluetooth headphones at once in transmitter mode. Both listeners hear perfectly synchronised audio with low latency. This dual-link function also allows a phone and tablet to stay paired in receiver mode for quick source switching. If you only ever need one headphone connection, a simpler adapter may suffice.

Sustained Long-Haul Operation

Under continuous use the internal battery delivers the rated 11 hours without performance drop-off. The unit maintains a stable Bluetooth 5.4 link throughout a transatlantic flight or an all-day road trip. Recharging uses a standard 5 V supply and restores full capacity for the next session. No thermal throttling or connection drift appears during extended playback.

How it compares

Measured against everything we stock in Wireless Microphone Systems, at today’s prices. Recalculated every night.

Price $21.99
Cheaper than about 95% of the 119 comparable items (median $114.99).

Specifications

Product
Brand nameGemini
Product lineC83Pro
Model nameC83Pro
Part numberC83Pro
Accessory categoryBluetooth airplane adaptor
Audio & video
Audio inputsMicrophone
Audio outputsMono
Connectivity
Wireless bandsBluetooth 5.4, bluetooth
Wireless rangeBluetooth car aux adapters
Power
Power drawBattery Powered, 5 V DC, 0.1 Wh
Power supplyBattery Powered, 5 V DC
Size & build
Measurements14.33 in W × 12.83 in H × 9.06 in D
Product weight4 oz
In the box
Package contentsTrue, false, battery, 1
More details
ModulationBluetooth, bluetooth, AUX
Team affiliation1 Piece

Questions about this item

How does the 11-hour battery life hold up on a long-haul flight?

The built-in battery is rated for 11 hours of continuous streaming, enough for most transatlantic sectors without a recharge.

What does Bluetooth 5.4 actually cap in everyday use?

Version 5.4 keeps a stable link up to the standard Bluetooth range while supporting dual-headphone streaming with low latency.

Will the 1.12 by 5.11 inch adapter fit my seat-back entertainment jack?

The slim 1.12-inch width and 5.11-inch height let it sit flush in a standard 3.5 mm socket without blocking adjacent controls.

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