1. Wireless V5.0 2. Support ambient light 3. Battery voltage detection 4. Automatic power-off memory function 5. Support stereo FM transmission technology 6. Support U disk playback 7. Support music playback 8. Support WMA, MP3, WAV, FLAC music format files 9. wireless supports A2DP, AVRCP, HFP, HSP 10. Bluetooth-compatible hands-free calling 11. Support Bluetooth-compatible stereo music DSP technology Double USB PD fast charging: Can charge multiple mobile phones at the same time. High quality music playback: wireless pairing 5.0 transmission without distortion, advanced noise reduction technology to ensure sound quality, crystal clear sound. You can play music on your car stereo through wireless pairing /USB FLASH drive (32GB)/TF card (32GB). Note: USB flash drive or TF card supports WMA MP3 WAV APE FLAC music format. Hands-free callP: built-in microphone and noise suppression (CVC) technology, make hands-free call clearer, automatically switch from music playing state to hands-free state when answering. One click to answer/end the call. It's easy to drive. Wide compatibility: Wireless pairing FM transmitter supports all devices that support wireless pairing, suitable for iPad, iPhone, Google, LG, tablet PC, Android and other devices with wireless pairing connection, easy to set up and use. 7-color RGB LED Backlight: This wireless pairing radio transmitter supports 7-color LED backlight and you can get a visually stunning color display. Package Included: 1 x Bluetooth FM transmitter 1 x User Manual