Features: Hands-free function Wireless music. Supports all car speakers with AUX input. Multi-function, can connect with two BT devices. Compatible with most smartphones and BT electronics. Reverse control of the music play of connected BT devices. High quality stereo transmission for a better music experience. Up to 90dB SNR and low audio distortion of 0.05%. Easy to set up, just plug the receiver into car charger and connect to the BT device. Small size and lightweight, convenient to use and store.