Put the left and right headphones of AirPods Pro into the charging case to charge; The charging case of AirPods Pro can be used for 24 hours, if the charging case runs out of power, you can use the charging cable that comes with AirPods Pro to connect to the 5W power adapter for charging. Of course, the AirPods Pro charging case also supports wireless charging, so we can use a certified wireless charger to charge the case.