... pack;----LED light function, indicates the power status at any time.----Over current, over charge, over discharge, overheating and short circuit protection ... speaker / Bluetooth products / USB AA/AAA battery charger Battery TypeLithium Polymer Battery Pack Capacity 5000mAh Input 5V,500mA Output 5V,1000mAh ... working days OEM or ODMYes, the colors , shape, and logo can be customized, as your need.