Transmission range: 10 meters
Function: support music, voice control, call function, multi-point connection
Bluetooth protocol: 4.1
Whether single binaural: bilateral stereo
Charging time: about 2 hours
Life time: about 7 hours
Standby time: about 100 hours
Operating frequency: 2.402-2.480GHz
Battery specifications: 3.7V / 300mAH built-in rechargeable lithium battery
Charging voltage: DC4.2-5.5V
Support Agreement: AVRCP.TS.1.6.0 / A2DP.TS.1.3.1
Instructions for use
1, boot: long press the power button for more than 3 seconds, the voice prompts \"BLUETOOTH MODE\", automatically enter the Bluetooth mode, LED light is always bright.
2, shutdown: headset boot state, long press the power button for more than 3 seconds, voice prompt \"POWER OFF\", LED off, the device is turned off.
3, on the phone: call, short press the power button.
4, hang up the phone: call, short press the power button.
5, refused to call: call, long press the power button for about 1 second.
6, redial the last outgoing number: double-click the power button.
7, play music: normal state, short press the power button, automatically open the smart device to play music.
Bluetooth Headphones Rechargeable Over The Head Wireless Bluetooth 4.1 Stereo Headset Sports Noise Isolation Technology Earphones C4 - B07G712KZ4