1.Bluetooth 5.0 Receiver is ideal for turning wired stereos and headphones into a Bluetooth-equipped system to receive signals from most audio output devices like smartphones, tablets, and even TVs / computers / MP3 players.2.Enjoy improved call quality thanks to a microphone calibrated for crystal clear and hands free calling3.Mobile navigation change to vehicle navigation more clearly, so that you can drive more safely4.Built-in microphone, high definition hands-free call lower power consumption more stable transmission, better sound quality. 5.Longer Battery Life: Immerse yourself in your music or conversations with up to 8 hours of play time and up to 100 hours of standby! Automatically power off after five minutes without a Bluetooth connection.6.For More Choice:Car kit aux receiver can connect 2 Bluetooth devices at the same time for enjoying your music and won't miss any calls. freedom to enjoy music, GPS or answer phone calls.