4-in-1 functions portable mobile power bank 1,Portable,mini size. 2,Rechargeable polymer battery. 3,Led lighting. 4-in-1 functions portable mobile power bank 1. Product Specifications: Bluetooth Specification ... twinkle.) Function 3, Power bank( To charge for mobile phone with 2200mah capacity) Function4, handsfree receiving the call or redial out . 4-in-1 functions portable mobile power ...