Compact portable watch power bank 300mAh polymer battery. compact portable watch power bank unique keychain design MFI watch magnet charging moudel. Accessorry: Micro USB cable, fashion keychain.
Here’s a keychain-sized external battery pack for your Aple Watch.
Fast charging efficiency, 5v/1A output,conversion rate over 85%.
Safe and Secure
Built-in Intelligent over-heat, over-charging and over-current protection. So, now no need to worry about over charging your device, compact portable watch power bank will stop charging itself when the battery is full.