Usage Tips: 1. Smart fast charging, dual USB smart fast charging, dual USB interface charging at the same time, cell phone tablet charging at the same time 2. Strengthen the protection, firm and stable, strong shock bumps do not stop charging, strengthen both sides of the anti-slip , elastic and stable 3. and stability, CNC display battery voltage real-time monitoring real-time monitoring voltage, driving 4. One key to answer, Bluetooth hands-free call, one key operation worry-free driving 5. With memory function, power-off memory playback function, power on automatically back to connect, memory frequency, track restart after power failure Navigation voice broadcast, artificial intelligence again to enhance the cell phone navigation broadcast, a key Bluetooth connection, voice broadcast more accurate. Name:Bluetooth Transmitter Type:FM Transmitters Colour:Silver Material:ABS Package Contents: 1 * Bluetooth Transmitter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.