1、More compatibility: wireless bluetooth FM transmitter adapter for car radio, transfer call, MP3 music, mobile phone voice to car speaker. Compatible for iphone for IOS Tablets for Samsung etc. 2、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. 3、Car battery voltage function: 3 seconds voltage display when inserted into the car socket. Keep the battery healthy at all times. Then it goes to autoplay mode. 4、Music player: Support Bluetooth, U disk, memory card, MP3, WMA player. With anti‑interference performance and CVC technology. Automatically connect the memory pair after startup. 5、Providing with high fidelity stereo transmission and noise reduction technology given by its premium Bluetooth chip, this auto audio adapter can entertain yourself with immersive music experience. Item Type: Car Bluetooth FM Transmitter Material: ABS Model: B8 Color: Rose Gold Functions: Bluetooth Adaptor, FM Transmitter Application: Cars 1: Bluetooth Hands Free Call 2: Echo cancellation and noise processing during the call 3: Stereo Bluetooth and FM Emission 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: DC12V-24V Voltage Power Supply 8: Bluetooth Version 5.0 FM Transmitting Frequency: 87.5 ~108Mhz 9. Voltage Detection Scope of Applications: Compatible for IOS Tablets, for iPhone, for Samsung, for Google, for LG, for HTC and Bluetooth devices 1 x Adapter