Features:

Bluetooth V4.1+EDRBluetooth Headset & Hands-free, A2DP, AVRCP92dBm RX sensitivity and +9dBm TX output power capability 24 bit Audio codec, -98dB SNR10+meter, class2DC5V/100MA-1A

Specifications:

Power: Press the power button for 2-3 seconds, along with red and blue lights, boot into the back even statePower Pairing: Press the power button for 5-6 seconds, along with red and blue lights, after flashing red and blue alternately into pairing modeVOL +: Press the volume + button for 2 seconds, add up the volume a maximum sound, a warning soundVOL-: Press Volume - button for 2 seconds, cut down the volume a minimum sound, a warning soundPrevious: Press VOL+Next: Press VOL-Telephone Answering: when to call, press the power buttonRefused to answer: when to call, press the power button for 2 secondsRedial last telephone number: double-click on the standby power buttonCharging: red light when charging, fully blue lights