7 Color LED Backlit Version : Supports 7 colors led backlit light, including Red/ Green/ Blue/ Yellowish Green/ Purple/ Cyan/ Silver White, you can get visually stunning display of colors. Which is a nice way to match the colors that are already in the car. Quick Charge 3.0 : Possibly the latest, fastest and most efficient USB charging technology in the world. Up to 4X faster than standard chargers, able to charge compatible devices to 80% in just 35 minutes. Equipped with a voltmeter to show you the condition of your car battery. Crystal Clear Music Streaming : You can stream music on your car stereo via Bluetooth/ USB Flash Drive ( 32GB) / microSD Card( 32GB). Advanced noise reduction technology will ensure quality, crystal clear sound. Note:MP3/WMA/FLAC/AAC/WAV format music is supported. Crystal Hands-free Calls : Bluetooth 4.2 provides a stable connection and echo-cancellation reduces background noise for better hands-free calls. Siri and Google Assistant Compatible : Nulaxy NX09 FM transmitter Bluetooth supports voice commands to ensure safe driving, using Siri or Google Assistant to make phone calls, send texts or get driving directions. Enjoy complete voice-control while you driving.