... size. 2,Rechargeable polymer battery. 3,Led lighting. 4,Power mobile power bank with usb charger1. Product Specifications: Bluetooth Specification:V2 ... blue by turn---> To open the bluetooth in your mobile, searching the bluetooth device" widecom speaker" then paired. ... 3 seconds, it will twinkle.) Function 3, Power bank( To charge for mobile phone with 2200mah capacity) Function4, handsfree receiving ...