Item Details TF/USB Flash Music playing: - If insert the TF card or USB flash drive, it will automatically play USB music; - Long press [Answer] button to swtich music mode between USB/TF/Bluetooth modes Bluetooth mode: - Short press [Answer] button: Answer / Hang up call; - Long press [Answer] button: Reject call - Double press [Answer] button: Redial last phone number Specification: *Condition: 100% Brand New & Good Quality *Rated operating voltage: DC12V-24V *Working Voltage limits: 9-26V *USB1 Output: 5V/2.1A *USB2 Output: 5V/1.0A , read USB Flash music. *Working Temp: 0-50 *Support Play format: MP3 *BT Version: Version 5.0+EDR *BT sound processing: A2DP(Advance Audio Distribution Profile) *BT transmission distance: 10M *BT microphone effective range: 0.5-2M *FM transmission frequency: 87.5-108Mhz How to use: 1. Insert the device to car cigar lighter outlet, start the car for Power ON; 2. Tune the car radio and device to a same blank channel, such as if car radio is 87.5MHz, the device must be 87.5MHz to, press [CH] to adjust frequency; 3. Turn on the BT of phone, searchBT-Car"and Pair with it, pair successfully, play phone music, sounds will comes out from car speaker Package Included: 1 x FM Transmitter Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.