Features: The transmitter is powered by the 12~24V car cigarette lighter hole, Support inserting U disk and memory card to play Noise suppression (CVC) Rotary shaft design, easy to use Charge various smartphones Brand new and high quality. Support MP3/WMA music format Stream audio wirelessly to the radio Excellent sound quality and D.S.P echo cancellation solution Specification: Microphone range: 0-2 meters Audio distortion: 0.1% Left and right channel separation>60dB Signal-to-noise ratio>60db Rated working voltage: 12V Power Consumption: 1W Bluetooth version: 5.0 material: plastic Supported formats: MP3, WMA Frequency response: 20Hz-15kHz Transmission frequency: 87.5-108MHz Working temperature: -20-50 degrees Limit working voltage: 9-26 V Bluetooth transmission distance: 10-15 meters Packing List: 1 hands-free car kit FM transmitter 1 manual