User's Manual

 If you do not use the earbuds and charging case for a long time, it is
recommended to charge the earbuds and charging case for at least 3
months to avoid the battery exhaustion and enter the sleep mode.
3. Charging for charging case
When you put the earbuds into the charging case and find that the green
indicator light flashes once every 2 seconds, it means that the battery level
of the charging case is low. In addition the indicator light of the charging
case is off and it cannot charge the earbuds, it means that the battery of the
charging case has been exhausted.You need to charge the charging case:
The way of charging for the charging case as following:
Using USB cable
1) Plug the Micro USB charging cable into the case’s charging jack.
2) Plug the USB cable into a USB port of PC or a 5Volt USB charge.
Wireless charging
1) Connect the wireless charger to the power cable. (some wireless
chargers with built-in batteries may not need to be connected to the power
cable)
2) Place the charging case in the charging area marked on the wireless
charger and make sure it is placed in the center of the charging area for
maximum efficiency.
Green LED flash = charging
Green LED off = Finish charging
3) Charging should be completed in roughly 2 hours.When using wireless
charging , the charging time will be slightly longer.
4) If the earbuds are in the charging case, it can charge the earbuds while
charging the charging case.
Type-C charging Wireless charging