... 2,Rechargeable polymer battery. 3,Led lighting. new coming big capacity mobile power bank 1. Product Specifications: Bluetooth Specification:V2.1 ... Charging output voltage, electric current: DC5.0V 500mAh Battery Capacity:3.7V 2200mAh Taiwan patent: M 424721 2. Product ... 3, Power bank( To charge for mobile phone with 2200mah capacity) Function4, handsfree receiving the call or redial out . ( function ...