1. Powerful bluetooth IC, More stronger compatibility
2. Powered by built-in rechargeable li-ion battery via mini USB port , long working time and low consumption. (Mini USB cable included)
3. You can play music through your car stereo and answer phone call via the built-in Mic.
3.5mm aux wireless 5.0 Audio bt bluetooth Transmitter with usb Stereo Music For TV MP3 PC iPod Laptop