It is made of aluminium material. It can be charged slowly by absorbing solor power. It can be used for all Smartphone, Tablet PC, PSP, Digital Camera, Media Player etc. With 6000mah capacity power bank, it has high transfer efficiency and over 3 times can be charged if it is full charged. Also stylish, lipstick-shaped, lightweight design fits easily into any pocket or bag. It has dual usb port ,with charging indicator and led torch. Logo can be imprinted on it.