1、It is practical and can be used as a wireless FM transmitter of a car radio to transmit calls, MP3 music, mobile phone voice to the car speakers. 2、Extensive compatibility, compatible with tablets, for IOS Phone, for Samsung, for LG, for HTC and other Bluetooth devices. 3、Support hands free function, built in microphone, automatically switch from music playing state to hands free mode when answering a call. 4、The voltage is displayed for 3 seconds when plugged into the car socket. Always keep the battery healthy. Then it goes to auto play mode. 5、Music player can support Bluetooth, U disk, memory card, MP3 and other players. With anti interference performance and CVC technology. 6、It is easy to use, you can listen to music while charging, and it can be automatically connected after booting, and the pairing can be remembered. Item Type: Car FM Transmitter Model: B2 Colour: Black Material: ABS Function: Bluetooth Adaptation, FM Transmission Scope of Application: Car 1: Bluetooth Hands Free Call; 2: Noise Processing; 3: Stereo Bluetooth And FM Transmission Technology; 4: Support USB, Memory Card (Not Included), Bluetooth Function; 5: Support MP3 Format Music; 6: Automatic Power Off Memory Function; 7: Cigarette Lighter Power Supply: DC12V-24V Voltage Power Supply; 8: Bluetooth Version 5.0 FM Transmitting Frequency: 87.5~108Mhz 9. Voltage Detection 10. Support File Types: MP3, APE, FLAC, WAV 11. Working Temperature: 0-60℃ 1 x Car FM Transmitter