Battery type: 18650 batteryInterface: Micro USB(input)， USB(output)Input: DC 5V， 2.0AOuput: DC 5.1V， 2.1ACharging time: about 5.5hours with 5V/2A chargerCharge temperature: 0-45Discharge temperature: -20~+60Weight: 250gColor: Silver Size: 9 x 7.7 x 2.2cm(L x W x T)Package include:1 x Power Bank 1 x USB Cable