cup holder dual usb port charger adapter with car bluetooth fm transmitter music player hands calling u disk tf card

specification: type: bluetooth car kit product model: bx6 material: abs, metal product size: 10*8*6cm color: black bluetooth version: bluetooth 4.2 + edr working voltage: dc 12~24v usb output: 5v2.1a music format: mp3 and wma signal to noise ratio: gt; 60db distortion: lt;0.1% bluetooth music processing: a2dp fm mode: stereo digital phase-locked loop frequency lock fm frequency range: 87.5-103.0mhz bluetooth effective distance: lt;10m / 33 feet effective microphone range: 0...