Eachbid 4000mAh Portable External Power Bank(Lipstick Shape) for Phones White Capacity: 4000mA Battery type: Rechargeable li-ion battery. Input Voltage: DC 5.0V/1.0A Output Voltage: DC 5V/1A Size:9.0m x 2.5cm x 2.5cm - 3.54inch x 0.98inch x 0.98inch.