1.【7 Color LED Backlit Version】: Supports 7 colors led backlit light, you can get visually stunning display of colors. Which is a nice way to match the colors that are already in the car. 2.【Quick Charge 3.0】:  Efficient USB charging technology . 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. 3.【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. 4.【Crystal Hands-free Calls】: Bluetooth provides a stable connection and echo-cancellation reduces background noise for better hands-free calls. 5.【Siri & Google Assistant Compatible】: 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.