i12 Bluetooth Earphones Wireless Headphones Music Earbuds Sport Gaming Handsfree Headset For Smart Phone Xiaomi Samsung Huawei

Specification:
Bluetooth version:Bluetooth V5.0
RF transmit:class 2
Transmission Range(HZ):2.402GHZ-2.480GHZ
Transmission distance:10M
Working Voltage:3.0V-4.2V
MIC sensitivity:-42dB
Frequency(HZ):20HZ-20KHZ
Support profile:HFP,A2DP,AVRCP
Standby time:about 60 hours

*Power on/off: Power on when pick out the earphone from the charging case. Power off when put the earphone back to the case . and start charging after press the charge button

*Bluetooth Pairing : Earbuds will turn on automatically and connected with another one,when it with voice prompt"power on ""pairing",and the device will be pairing mode when "connected"prompt tone with the LED indicator flashes red and blue. 1. Long press the key for power on or power off. 2. No connection status:it is TWS pairing automatically. 3. hands-free call : short press the key to answer/hand-up calls, long press the key to reject the coming call. 3. The connection status: short press the key  to play / pause, double-click the button on left earbud for last music, double-click the butoon on right earbud for next music, triple-clikc the left earbud for volume up, triple-colick the right earbud for volume down

*Product usage introduction:
Put the earbuds into the case and press the charge button,the blue light of the charging case is on when charging the earbuds, and the blue light will be off when earbuds power full .the earbuds light is red when charging,earbuds light is off once power full . Description of product use effect

the charging case indicator ligth is flashing when charging the case, and the indicator light keep on when case power full .the blue light keep flashing if charging case power low, pls charge it