... universal power bank Li-ion polymer Size:21*35.5*41cm Advantage:Space-sensitive,Fashionable Product features: 1. Built-in high-capacity li-ion polymer battery, 4400mah, to ... : li-ion polymer core, rechargeable, 500times above charging cycle,2. Hard plastic shell, white color,3. The battery capacity: 4400mah4. Input, mini-USB 5V / 1A ...