Specifiction:<br/>Material: circuit board<br/>Interface: MICRO USB female base<br/>Input voltage: 5V<br/>Charging cut-off voltage: 4.2V ± 1%<br/>Maximum charge current: 1000mA<br/>Battery over discharge protection voltage: 2.5V<br/>Battery overcurrent protection current: 3A<br/>Product Size: 2.8 * 1.7 * 0.4cm<br/><br/>Packing List:<br/>1 x Charger Module USB 5V 1A TE420