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Small black rectangular Bluetooth 5.4 adapter with 3.5 mm jack and USB-C port

OQIMAX Bluetooth 5.4 2-in-1 Transmitter Receiver 3.5mm AUX Car Electronics Accessory

SKU CH-FC76-F6X3E

A 2-in-1 Bluetooth 5.4 adapter switches between transmitter and receiver modes, adds hands-free calls via a built-in microphone, runs up to 11.5 hours in RX or 10 hours in TX.

  • Adjustable low passHands-Free Calls
  • Adjustable parametric bass EQHands-Free Calls
  • Cable typeAuxiliary, USB Type C
  • Drilling requiredWired
  • Included hardwareFalse, true
  • Head unit size1.905 cm × 7.7978 cm × 9.398 cm
  • 2-in-1 adapter adds Bluetooth to non-Bluetooth devices
  • Built-in microphone enables hands-free calls while driving
  • Bluetooth 5.4 provides stable connection up to 33 feet
  • Up to 11.5 hours playback in RX mode
  • USB-C charging completes in 1.5 hours

Car Electronics Accessory

The OQIMAX Bluetooth 5.4 adapter is a 2-in-1 wireless audio accessory for car stereos, home speakers, TVs and airplane seats. It adds Bluetooth to non-Bluetooth sources in transmitter mode or streams audio to wired systems in receiver mode. Drivers, travellers and home listeners gain cable-free playback from a single pocket-sized unit.

Thermals noise and power draw

The built-in battery provides up to 11.5 hours of playback in receiver mode and 10 hours in transmitter mode. A USB-C port recharges the unit in 1.5 hours and supports simultaneous use while charging. No active cooling is required and the device runs silently during normal operation.

3.5mm AUX and Bluetooth 5.4 connectivity

A 3.5 mm auxiliary jack handles wired input or output depending on the selected mode. Bluetooth 5.4 delivers a stable link up to 33 feet with support for two headphones simultaneously. The adapter is not compatible with devices from Sony and requires TV audio output to be set to external speakers for sound.

How it compares

Measured against everything we stock in Car Audio Accessories & Wiring, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 80% of the 2,768 comparable items (median $21.99).

Specifications

Product
Brand nameOQIMAX
Product colorBlack
Performance
Effective rangeBluetooth 5.4, bluetooth, AUX
Audio & video
Audio inputs3.5 mm AUX
Audio outputsBluetooth
Audio sensitivityHands-Free Calls
Headphone styleHands-Free Calls
Ports & slots
Cable typeAuxiliary, USB Type C
Size & build
Head unit size1.905 cm × 7.7978 cm × 9.398 cm
In the box
Included hardwareFalse, true
More details
Adjustable low passHands-Free Calls
Adjustable parametric bass EQHands-Free Calls
Drilling requiredWired
Team affiliation1 Piece

Questions about this item

How do I install the OQIMAX Bluetooth 5.4 adapter in my car and what step is often missed?

Plug the 3.5mm AUX cable into the car stereo aux port, then hold the multi-function button to enter TX or RX mode; the step often missed is switching the car audio source to AUX input so sound routes through the adapter.

What maintenance or replacement will the OQIMAX adapter need later?

The built-in lithium battery cannot be user-replaced; after many charge cycles the 11.5-hour RX or 10-hour TX runtime will shorten, at which point the whole unit must be replaced.

What limit appears first during sustained use of the OQIMAX adapter?

Battery life is the first limit — 11.5 hours in RX mode or 10 hours in TX mode — after which the adapter must be recharged via USB-C for 1.5 hours to continue operating.

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