Features: 1.Blue Tooth Chip: This wireless transmitter using blue tooth 5.0 chip technology, with hands free calls, play music and other functions, intelligent connection to the device, no lag. 2.Data Interface: USB interface can also be used as a charging interface when using a special charging cable, high current car charging interface, which can provide multimedia, cell phones, tablets, etc. up to 5V3.1A charging current. 3.Sound Technology: This blue tooth transmitter has sound cancellation and noise processing when talking, with stereo blue tooth and FM transmitting technology, so you can enjoy a pleasant sound experience. 4.Music Playing: Support USB, TF card, blue tooth function, MP3, WAV format music, you can listen to music while charging, so you have a relaxing journey. 5.Convenient Handling: This blue tooth transmitter with automatic power off memory function, automatic connection memory pairing on, with voltage detection and 7 color ambient light, you can get visually amazing color display. It is easier to operate and safer to drive at night. specification:Item Type: Car Blue Tooth Adapter Material: Plastic and Electronics Interface: USB2.0 Maximum Capacity of TF Card: 32GB(Delivered with built in TF card) Power Supply: DC12-24 v Supported File Types: MP3, APE, FLAC, WAV, WMA Operating Current: DC12V 50-100mA Bit Rate: 64-320kbps FM Frequency Range: 87.5-108mhz SNR: 85dB Operating Temperature: 0-60 Degrees Celsius BlueTooth Version :V5.0 and EDR Transmitting Distance: Less Than 5 Meters PackageList:1 x Car Blue Tooth Adapter 1 x