1、Wireless Bluetooth FM Transmitter adapter for car radios to transfer call, MP3 music, cell phone voice to car speakers. Compatible for iPad, for iPhone, for Samsung, for Google, for LG, for HTC and Bluetooth devices. 2、Support Bluetooth, U Disk Card, MP3, WMA player. With anti‑interference performance and CVC technology. Listen to music while charging. Automatically connect the memory pair after startup. 3、Hands free function, built in microphone, automatically switch from music playing state to hands‑free mode when answering a call. Answer, reject, raise your hand, recall. 4、Car battery voltage function, 3 seconds voltage display when inserted into the car socket. Keep the battery healthy at all times. 5、Multifunctional transmitter, echocancellation and noise processing during calls; Stereo Bluetooth and FM emission technology; Support USB, memory card (not included), Bluetooth function. 1 x Adapter Item Type: Car Bluetooth AdapterModel: C4Color: BlackMaterial: ABSFunctions: Bluetooth Adapter, FM TransmitterApplication: Cars 1.Bluetooth Hands Free Call 2.Reply cancellation and noise processing during the call 3.Stereo Bluetooth and FM Emission Technology 4.Support USB, Memory Card (not included), Bluetooth Connection 5.Support MP3 Format Music 6.Automatic Power off Memory Function 7.Cigarette Lighter Power: DC12V-24V Voltage Power Supply 8.Bluetooth Version 5.0 FM Transmitting Frequency: 87.5 ~108Mhz 9. Voltage Detection 10. Supported File Type: MP3/APE/F; AC/WAV Supply 11. Operating Temperature: 0-60℃