1. Portable battery pack for Apple Watch features overcurrent, overvoltage, short circuit and overheating protection, you do not need to guard beside the charger, the whole process will remain safe and stable operation

2. Built-in 1800 mAh battery, no cables to plug in, magnetic charger near the back of the watch and press the button to charge. this charger for Apple Watch will provide you with the perfect solution and say goodbye to low battery anxiety.