... practicall Automatic charging function,built-in DC3.7V/1100mAh battery Power supply: Battery-powered, computer USB port power supply, adapter power supplyDC5V/2ABattery ... : Input voltage5V±10% 2A(electric current)BatteryDC3.7V1100mAh(Rechargeable lithium battery)Video signal formatsNTSC/PAL (auto-identity)Video output mode1.0Vp ...