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Small black rectangular Bluetooth 5.4 adapter with 3.5 mm jack, 2.4 by 0.87 by 0.48 inches

Scosche C28-A Bluetooth 5.4 car electronics accessory

SKU CH-HJF8-YWHT0 MPN C28-A

A 2-in-1 Bluetooth 5.4 transmitter and receiver adds wireless audio to car stereos and home systems via a 3.5 mm jack

  • Screen sizeModern
  • Labor warranty1 Year
  • Adjustable low passBluetooth 5.4, Fast Charging, Low Latency, Noise Cancellatio
  • Adjustable parametric bass EQBluetooth 5.4, Fast Charging, Low Latency, Noise Cancellatio
  • Cable typeAuxiliary, Female-to-Female
  • Audio channelsStereo
  • Bluetooth 5.4 gives low-latency wireless audio
  • 2-in-1 transmitter and receiver covers both streaming directions
  • 5 mm AUX connects to non-Bluetooth sources
  • Auto reconnection pairs instantly after power-on
  • Compact 2.4 × .87 × .48 in design fits tight spaces

2-in-1 Bluetooth 5.4 Adapter

This Scosche C28-A adds wireless audio to any device with a 3.5 mm auxiliary input. It operates as a transmitter for TVs or PCs and as a receiver for older car stereos or home speakers. The compact dongle suits drivers and home listeners who want cable-free streaming without replacing existing equipment.

Low-Latency Streaming and Hands-Free Calls

Bluetooth 5.4 delivers stable, low-latency audio for music and video playback. Built-in noise cancellation keeps phone conversations clear, while the integrated microphone enables hands-free calling in the car. The adapter runs on a 1.5 volt supply and reconnects automatically to the last paired device after power-on.

Plug-and-Play with Included 3.5 mm Cable

A female-to-female auxiliary cable is bundled for immediate connection to head units, amplifiers or powered speakers. The ON/OFF switch puts the unit into pairing mode at startup, so no app or driver installation is required. Buyers needing aptX codecs, multi-point pairing or a dedicated charging port will not find those features here.

How it compares

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

Price $18.99
Cheaper than about 63% of the 2,768 comparable items (median $21.99).

Specifications

Product
Brand nameScosche
Model nameC28-A
Product typeCar
Product colorBlack
Display
Screen sizeModern
Audio & video
Audio channelsStereo
Audio inputsAUX
Ports & slots
Cable typeAuxiliary, Female-to-Female
Power
Electrical ratingModern, 1.5 V
Power detailsBattery Powered
Rated voltage1.5 V
Size & build
Overall height2.4 L x 0.87 W x 0.48 H inches
Overall width2.4 L x 0.87 W x 0.48 H inches
Overall length2.4 L x 0.87 W x 0.48 H inches
Head unit sizeSingle DIN
Size or dimensions2.4 in × 0.87 in × 0.48 in
In the box
Included hardwareFalse, true
More details
Adjustable low passBluetooth 5.4, Fast Charging, Low Latency, Noise Cancellation, Hands-Free Calls, Stereo music, Easy to use
Adjustable parametric bass EQBluetooth 5.4, Fast Charging, Low Latency, Noise Cancellation, Hands-Free Calls, Stereo music, Easy to use
Cut out diameterSmall
Inner hole diameter for wireSmall
Team affiliation1 Piece

Questions about this item

How do I plug the 3.5 mm jack into my car stereo and which mode do I select first?

Insert the 3.5 mm aux plug into the car’s auxiliary input, slide the power switch on, then choose TX to send audio from the stereo to Bluetooth headphones or RX to stream from a phone to the stereo.

What part will need replacement first with daily use?

The internal rechargeable cell will degrade after repeated charge cycles, so the whole adapter will eventually need replacing.

How long does the Bluetooth 5.4 link stay stable on a single charge during a long drive?

The adapter runs about eight hours per charge before the connection drops and it must be recharged.

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