Features 1、FM TRANSMITTER: The fm transmitter transmits the music in the mobile phone, U disk, memory card, and MP3 to the car audio for playback. 2、CAR CHARGING: Car charging can intelligently charge the mobile phone through the USB interface. The USB output voltage can provide up to 5V/2.5A to other devices. 3、BLUETOOTH CAR HANDS FREE: The mobile phone can make a one‑key hands free call via Bluetooth. One key hands free via Bluetooth, answer, hang up, reject, redial. 4、CAR USB: You can read the U disk through the USB interface, or read the memory card from the card slot, support the use of U disk to play music, and support the MP3/WMA music format. 5、BLUETOOTH STEREO MUSIC PLAYBACK:Bluetooth stereo music playback, transmitted to the car stereo through fm. Call echo cancellation and noise reduction (CVC) technology. Specification Item Type: Bluetooth Car Charger Material: ABS Working Voltage: 12-24V Voltage Limit: 9-26V Bluetooth Version: V4.2 Bluetooth Audio: A2DP Bluetooth Transmission Distance: Approx. 10m / 32ft FM Frequency: 87.5-108Mhz Play Format: WMA/MP3 Package List 1 x Charger 1 x Audio Cable 1 x Manual