Convenient:Compact and lightweight design with USB charging cable,you can put it in your bag and carry around,ideal chioce for travelers and business users,make your smartwatch work anywhere.Please note that it is not an OEM product. Plug to Charge: With a 3.3 ft charger cord, just simply plug your smartwatch into a USB port on your PC, laptop, wall charger or car charger to charge, easy to charging. Safe & Protection: Build-in protection circuits, protect the watch from over-current/voltage. ( We suggest 5V/1A adapter, otherwise, it may cause the watch to heat up.). Secure Fit: Strong magnet charging port attaches the watch in the charger rack closely, ensuring a secure fit with every insertion. Perfect Fit: ONLY compatible with iTouch Air 3 Smartwatch & iTouch Sport 3 Smartwatch,NOT suitable for other watch models.Not Fit for iTouch Air 4 Smartwatch & iTouch Sport 4 Smartwatch.