Portable Charging Box, provide 4 times full charges
-How to charge
1. Make sure your charging case has enough power. （The number of flickers of the indicator lamp represents the power of charging box, four times indicates it is fully charged.）
2. Put the earphones into the charging box.
Then press the silver button on charging box and close the cover to start charging.
(While in charging, the headphones will flash slowly)
3. When the power is full, they will stop automatically.