Come and see our amazing products. The data retained by the Bluetooth earphones shows the power of each earbud. Wireless Earbuds is equipped with one-step matching and automatic power-on and power-off technology. Once you take the earplugs out of the charging case, it will automatically open and match each other. When placed in the charging box. it will automatically turn off and start charging until it is fully charged. The magnetic charging box built-in 1800mAH battery to ensure reliable charging of earplugs. Wireless Charging Case earplugs with full electricity can continuous play the music for 3-5 hours and a total of 90 hours. So you do not have to worry about charging when you go out. You can also use the charging box to charge your smartphone when the power is off. Pls confirm further with us if any query about packing info, inventory status and time schedule.