Findway&reg; Bluetooth Handsfree FM Transmitter Modulator With USB Charger TF Card Car Kit MP3 Player The latest production of high-quality car MP3 players, separate power switch, with a Bluetooth-enabled; 12-24V supply voltage, for a variety of models, support mobile phone charging. Support read U disk / TF card with card reader connected to the computer. Rotating hose design, any adjustment to the optimal viewing position. Unique Bluetooth technology, connect your phone with a variety of convenient features such as hands-free calling. In the course of driving, higher safety performance. Specific connections and operation, please read the instructions carefully.