Operating frequency: 100-200khz
Conversion efficiency: greater than 72%
Compatible: For Apple Watch Series 1, 2, 3, 4
Simply plug it into a wall charger, power bank or any other USB charging devices and charging is on the go!
This charger is Cable-free made of high quality magnetic Charging Module,no extra charging cables are needed. The iwatch wireless charging stand offer a fast original charging speed. Small DC ripple, high working efficiency and fast charging speed.