Features: Bluetooth:V5.0 Display: dual-screen digital tube display Charging interface: support USB 4.8A fast charging PD interface: support PD fast charge Voice assistant:support voice assistant function One-key power on and off: support one-key soft poweroff, support any key to power on Luminous lights: support RGB lights Battery function: support battery voltage detection Battery memory: automatic power-off memory function FM function:supportFM stereo transmission tcechnology U disk: support U disk playback TF card: support TF card music playback Playback format: support WMA, MP3, WAV, music format files Bluetooth-compatible format:Bluetooth-compatible;upports A2DP, AVRCP, HFP, HSP Hands-free function:Bluetooth-compatible hands-free calling Stereo:support Bluetooth-compatible stereo music DSP technology Frequency:87.5-108.5mhz USB output:4.8A,PD type-C Working Voltage:12-24V Packing list: 1x Car FM Transmitter Note: 1.Due to manual measurement,please allow 1-3 cm error. Make sure you don't mind before bidding. 2.Due to the difference of different monitors, the picture may not reflect the actual color of the product Thanks.