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Black rectangular speaker kit with sun visor clip and rotary dial

Avantree Roadtrip BTCK-12 Car Speaker & FM Transmitter Kit

SKU CH-3HY3-66AQH

A 2-in-1 Bluetooth speaker and FM transmitter kit with dual 3 W drivers, auto power via motion sensor, and a rotary dial for hands-free control

  • Compatible vehiclesMusic,Car, Car, Music
  • Woofer materialAcrylonitrile Butadiene Styrene (ABS)
  • Surround materialABS
  • MidrangeAuto Power On Off, Portable Speaker
  • TweeterPortable Speaker
  • Voice coilDynamic driver, Acrylonitrile Butadiene Styrene (ABS)
  • Dual 3W speakers deliver clear calls and audio
  • FM transmitter streams phone audio to car stereo
  • Auto power on/off via motion sensor saves battery
  • Rotary dial controls volume and activates voice assistant
  • Compact ABS build fits sun visor for portability

2-in-1 Bluetooth Speaker & FM Transmitter

The Avantree Roadtrip BTCK-12 combines a portable Bluetooth speaker with an FM transmitter in one sun-visor mounted kit. It lets drivers take calls, trigger a voice assistant, or stream phone audio through the car stereo without permanent installation. The unit powers on and pairs automatically when you enter the vehicle and shuts down when you leave.

35 W RMS power rating

The speaker delivers 35 watts RMS from dual 3 W drivers, setting the baseline for call clarity and music volume inside the cabin. Peak power reaches 396 watts for short bursts, but sustained output stays at the RMS figure. Buyers who need louder continuous output for a noisy highway commute should look at higher-powered alternatives.

Dual 3 W drivers for voice-focused audio

The two 3 watt drivers are tuned for spoken-word intelligibility rather than deep bass, so navigation prompts and phone conversations cut through road noise. Music playback is serviceable for podcasts or light listening, but the system runs out of headroom for bass-heavy tracks or high-volume party use. The 6.18 inch mounting depth fits most sun visors without blocking the driver's view.

How it compares

Measured against everything we stock in Car Stereo Speakers, at today’s prices. Recalculated every night.

Price $85.99
Cheaper than about 55% of the 379 comparable items (median $104.99).

Specifications

Product
Brand nameAvantree
Product lineBTCK-12
Model nameRoadtrip
Part numberBTCK-12
Product typeSpeaker
Product colorBlack
Audio & video
RMS power rating35 W
Power
Peak wattage396 W
Size & build
Woofer materialAcrylonitrile Butadiene Styrene (ABS)
Surround materialABS
Frame materialAcrylonitrile Butadiene Styrene (ABS)
Mounting depth6.18 in (15.7 cm)
Compatibility
Compatible vehiclesMusic,Car, Car, Music
More details
MidrangeAuto Power On Off, Portable Speaker
TweeterPortable Speaker
Voice coilDynamic driver, Acrylonitrile Butadiene Styrene (ABS)

Questions about this item

How loud will the 35 W RMS rating actually sound in my car?

The 35 W RMS rating represents continuous power output from the dual 3 W speakers, providing clear call volume and audio playback that can be heard over typical road noise without distortion.

What does the FM transmitter connect to and what limits its audio quality?

The FM transmitter wirelessly sends audio from your phone to your car stereo by broadcasting on an FM frequency you tune the radio to, so sound quality depends on local FM signal congestion and the stereo's tuner sensitivity.

How much space does the 6.18 inch mounting depth require on my sun visor?

The 6.18 inch mounting depth is the front-to-back size of the speaker unit itself; it clips onto a standard sun visor and needs that much clearance behind the visor panel so the device sits flush without obstructing the driver's view.

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