1. Turn on and Check the battery voltage
2. Supports Bluetooth hands-free, built-in microphone, convenient and safe answering calls; Caller ID Screen
3.CVC noise processing, wind noise suppression, full duplex communication technology during a call
4. A2DP supports mobile phone function, play high-quality mobile music directly after connecting to Bluetooth
5.After turning on the power, it will automatically connect and enter the pairing state automatically
6. Support TF card expansion to play MP3 / WMA format music
7.Comes with a 5V-3a output car charger, which can charge portable terminal devices.
8. AVX port input and output. Song name on screen