Fast Charging with 3 USB Ports: Designed with PD 18W and QC3.0 fast charging port as well as normal 5V/1A USB port (U disk port), this FM transmitter allows you to simultaneously charge 3 devices while listening to music Charging. 2 fast charging portsprovide 4x faster charging speed than standard chargers, you no longer have to worry about not having enough USB ports to charge and charging slowly. 9 RGB lighting modes: upgrade the Bluetooth car adapter, 8 static modes and 1 dynamic RGB, short press the light switch button to get 7 monochrome modes, including red, green, blue, yellow, purple, cyan and white; 8 and 9 more short presses to enjoy staticrainbow and dynamic rainbow light modes. Bring you a comfortable and romantic atmosphere while using the transmitter. Siri Google Assistant: Bluetooth FM transmitter supports voice commands to ensure safe driving. You can use the smart Siri or Google Assistant to make calls, send texts, get driving directions or voice navigation so you can focus on the road and makeyour driving easier, safer and more convenient. 2 Play Modes: The Bluetooth Car Transmitter allows you to enjoy stereo and Hi-Fi music with these two play modes: A: U Disk (up to 32G) B: Bluetooth connection. Note: Music in MP3/WMA/FLAC format is supported. With the full range of audible frequencies,you can freely listen to music without distorting the original signal from smartphones and more Bluetooth devices. Hands-free calling: Advanced Bluetooth V5.0 + EDR provides faster and more stable connection. The high-performance large microphone with CVC noise reduction technology greatly amplifies the sound reception, enhances the sound quality, and provides youwith crystal clear hands-free calls and voice navigation. Easily answer/redial/hang up or reject incoming calls with the multifunction button, which helps you seamlessly switch between incoming calls and music.