... to use 2012 New portablet power bank 4400mAh, use for mobile phone,tablet pc,with different color,useful.beautiful,Mini.fashionable. ... times Operating temperature:10-42°C Size:76*58*21mm Housing material:Zinc alloy material,oxidation treatment Color: Red,Silver, ... photo: 2012 New portablet power bank 4400mAh, use for mobile phone,tablet pc,with different color,useful.beautiful,Mini.fashionable.