Quick Charge 3.0: Possibly the latest, fastest and most efficient USB charging technology in the world. Up to 4X faster than standard chargers, it is able to charge compatible devices to 80% within 35 minutes. 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: WMA MP3 WAV APE FLAC music formats in USB flash drive or microSD card are supported. Enjoy Hands-free Calls: Nulaxy technology provides a stable connection and echo-cancellation can reduce background noises for better hands-free calls, so you can answer phone calls with a press of the button. 7 Color LED Backlit Version: Supporting 7 colors led backlit light, including Red,Green,Blue,Yellowish Green,Purple,Cyan, this Bluetooth fm transmitter will give you a visually stunning display of colors, which is a nice way to match the colors already in the car. Safety F