Capacity: 2000mAh/3.7V. The input voltage: DC5.0V +0.2V; max 1000mAh The output voltage: DC5.0V +0.2V; 2000mAh Model: PB2000Capacity: 2000mAh/3.7V.The input voltage: DC5.0V ±0.2V; max 1000mAhThe output voltage: DC5.0V ±0.2V; 2000mAhCycle Life: ≥500 The product size: 89 X 48 x 16.8 mmThe charging time: about 3 hours ( depend on the charger power .) 4 LED lights indicate capacity: 25%, 50%, 75%, 100%Accessoryies: : USB lines, 6 different connectors.The shell material: bright light scratch resistant UV surface treatment of plasticColor available: pink, orange, black, green, blue, white, Cola RedLates lithium polymer A-grade batteries. USB port output, 1A electric current. One key operated, automatic output, four battery indicator. Power bank auto-end output once mobile phone was changed over Special design of overcharge, overdischarge, over-current and short circuit protection.. Auto end output within 4 seconds when connectionless, energy saving and environment.. With more output connectors, to meet with more devices via USB port 

Rechargeable Power Bank 3.7V 2000mA