Premium AD P91 Earbuds same as A90 Pro Earbuds: LED Power Display and 60H Playback: Dual digital LED power display outside of the case to show the power level for charging the case and earbuds. When charging the case, the LED light will start to flash from 1 to 100. When you put earbuds into the case, then the earbuds will start to be charged. 470mAh battery capacity charging case can provide extra 4 times full charging for both earbuds, each earbud can last 6H on single charging. So, you can enjoy 60H music time in total via using in turn.
