Specifications: Input voltage: AC 110V to 240V Output voltage: DC 3.7 volts to 4.2 volts Charge voltage: 3.7 volts, fully charged on 4.2 volts Charging current: 450mAh Plug: 2 pins US standard Maximum capacity: 450mA Minimum capacity: 150mA Package Contents: 1 x universal lithium-ion battery wall charger