Features: 1.Car FM transmitter, support 87.5?108.0MHZ FM full frequency point transmission. Support mobile phone navigation and voice prompts. 2.Bluetooth 5.0, support answering, hanging up, rejecting and redialing calls, free your hands. 3.Support Bluetooth stereo music playback, support MP3/WMA/WAV/FLAC/APE format music, support U disk memory card (not included) playback. 4.Digital tube display, clear and intuitive, the operation is simple. With colorful atmospheres light, more attractive. 5.Support car battery voltage detection, allowing you to know the battery status in time. With automatic power?off memory function, dependable to use. 6.Dual USB output, support 5V/1A and 5V/3.1A mobile phone charging, support charging recognition. Specification: Item Type: FM Transmitter Material: ABS Rated Working Voltage: 12V-24V USB1 Output: 5V/1A USB2 Output: 5V/3.1A Support Music Format: MP3/WMA/WAV/FLAC/APE Support U Disk Capacity: Maximum 64G Support Memory Card Capacity: Maximum 64G (not included) Working Temperature: 60dB Distortion: 60dB Bluetooth Version: Version 5.0 Bluetooth Sound Processing: with A2DP (Advance Audio Distribution Profiles) function Bluetooth Transmission Distance: Less than 10M Bluetooth Microphone Effective Distance: 0.5-2M Installation Instructions: Plug and Play PackageList: 1 x FM Transmitter 1 x Manual