Welcome to our store! 1. FM car transmitter, supports 87.5‑108.0MHZ full frequency FM transmission. Supports mobile phone navigation and voice prompts. 2. Bluetooth 5.0, supports answering, hanging up, rejecting, and redialing calls, freeing your hands. 3. Supports Bluetooth stereo music playback, supports MP3/WMA/WAV/FLAC/APE format music, supports U disk memory card (not included) playback. 4. Digital tube display, clear and intuitive, easy to operate. With colorful ambient lights, more attractive. 5. Supports car battery voltage detection, so you can know the battery status in time. With automatic power-off memory function, reliable to use. 6. Dual USB output, supports 5V/1A and 5V/3.1A mobile phone charging, supports charging identification. Item Type: FM Transmitter Material: ABS Rated Working Voltage: 12V-24V USB1 Output: 5V/1A USB2 Output: 5V/3.1A Supports Music Format: MP3/WMA/WAV/FLAC/APE Supports U Disk Capacity: Maximum 64G Supports Memory Card Capacity: Maximum 64G (not included) Working Temperature: <70℃ Battery Voltage Accuracy: Error ±1V Signal-to-Noise Ratio: >60dB Distortion: <0.1% Frequency Response: 20Hz-20Khz Left and Right Channel Separation:> 60dB Bluetooth Version: Version 5.0 Bluetooth Audio 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 1 x FM Transmitter 1 x Manual Customer Satisfaction - Customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity, please contact us immediately. We will do our best to provide you with satisfactory after-sales service