Safe and Quick Wireless Watch Charging: For a more ideal charging experience, the wireless charger offers a safer and quicker charging mode that takes less than three hours to fully charge. Broadly Compatible The iWatch models Ultra/9/8/7/6/SE2/SE/5/4/3/2/1 (including the 38 mm/40 mm/41 mm/42 mm/44 mm/45 mm Version) are compatible with our wireless charger. Design that is portable This one-meter iWatch charging cable is handy to have on hand, particularly when traveling, and can be used as a backup watch charger. Improved Safety integrated safety features, including protection against overcurrent, overvoltage, short circuits, and overheating. protects the battery of your device from damage caused by overcharging.