The device has a battery voltage detection function;
Support Bluetooth hands-free calling, built-in microphone, safe answer the phone;
Support mobile phone A2DP function, connect to Bluetooth directly after playing high-quality mobile phone music;
Automatically connect back after power on, automatically enter the pairing state;
Support TF card/U disk to play MP3/WMA/WAV format music;
Comes with a car charger, output 5V/3.1A, can charge the handheld terminal device.

Bluetooth version: 4.2
Operating voltage: 12-24V
Limit voltage: 9-26V
Sensitivity: -42dB +/3db 360
Operating current: 45mA (max.)
Standby current: 25mA (max)
Frequency: 2.402-2.480ghz
Bluetooth effective distance: 8 meters
Sensitivity: -92 dBm
RF output: 4 dBm
FM frequency: 87.5MHz-108.0MHz
Transmission power: 87 dBuv/107dBuv
FM effective distance: 2 meters