[9 RGB Lighting Modes] Upgraded Bluetooth car adaptor with 8 static modes and 1 dynamic RGB, you can short press the light switch button to get the 7 single color modes, including red, green, blue, yellow, purple, cyan, white; And then short press 8 times and 9 times to enjoy the static rainbow and dynamic rainbow lighting modes. It brings you a comfortable and romantic atmosphere while using the transmitter.[2 Playing Modes] The Bluetooth car transmitter allows you to enjoy stereo and Hi-Fi music with this two playing modes: A: U disk (up to 32G) B: Bluetooth connection. Note: Support MP3/WMA/FLAC format music. With full range of audible frequencies, you are free to listen to music without distortions of the original signal from your Smartphones and more Bluetooth enabled devices.[Siri Google Assistant] Bluetooth FM transmitter supports voice commands to ensure safe driving. You can use intelligent Siri or Google Assistant to make phone calls, send texts, get driving directions or voice navigation, so that you can stay fully focused on the road and make your driving easier, safer and more convenient.[Crystal Hands-free Calls] Advanced Bluetooth V5.0 + EDR provides a faster and more stable connection. High-performance large microphone with CVC noise cancellation technology, greatly amplify sound reception and strengthen sound quality, which gives you a crystal-clear hands-free calling and voice navigation. Easy to answer/redial/hang up or reject calls via the multifunctional button, it helps you seamlessly switches between incoming calls and music.