Btootos Wireless Earbud Bluetooth Headphones with

LED Power Display and 60H Playback: Dual digital LED power display outside of the case is to show the power level for charging case and earbuds. When charging for the case, the LED light will start to flash from 1 to 100. When you put earbuds into the case, then earbuds will start to be charged. MORE HERE:https://amzn.to/3W3VAIA