The Keychain Power Bank has a number of premium features, including:
Integrated Apple Watch Charger: Magnetic charger is MFi-approved, and guaranteed to work with your Apple Watch.
1000mAh Capacity: Charges your Apple Watch up to 1.5 times.
LED Charge Indicators
Portable Power: Small enough to fit on your key ring, meaning youll always have power.
Micro-USB Charging Cable
Works with: Apple Watch Series 1-3, 1st Generation