... bank with usb battery charger 1,Portable,mini size. 2,Rechargeable polymer battery. 3,Led lighting. potable mobile power bank with usb ... hours LED brightness: 100Lux LED expired hour: 50000hours Charging input voltage, electric current:DC5.0V 1000mAh Charging output voltage, ... bluetooth in your mobile, searching the bluetooth device" widecom speaker" then paired. Following step, to open player the ...