About 200 hours
Use Mirco USB cable to connect Wireless headphone with computer to charge, or connect 5V-1A charging head to charge. When charging, the LED light will be red; when the battery is full, the LED light will be blue.
NOTE: Be sure to charge for 2 to 3 hours before first use
1. Flashing red lights instead of blue lights
A: Headphones are low-battery, you need to charge the headphone.
2. When charging, the red light is not bright.
A: a. Make sure the charging device is connected to the headphone well.
b. Not using headphones for a long time, the battery will go to sleep. In this case it needs to be charged for approximately 30 minutes, then the red light will be on.
3. Headphones can not hear the sound
A: a. Make sure the headphone is working.
b. Make sure the headphone is properly connected to the phone.
C. Make sure the headphone is in the normal working range.
d. Make sure the volume of the headphone is appropriale.
4. headphone alling efect is not well
A:a. Make sure the phone is in a strong signal area.
b. Efective use of the headphone distance is 10 meters. Please confrm the effective use of the headphone within the distance, and there is no barrier between the headphone and the phone.