Spacy and Beautiful best power bank Li-ion polymer Be used for ... prevent the power consumption, the colorful LED display the power and electricity state. Specifications:1. Core type: li-ion ... , rechargeable, 500times above charging cycle,2.Metal shell, black and silvery color.3. The battery capacity: 6600 mah4. Input, ... you feel free. You are always be welcomed. Spacy and Beautiful best power bank