Model: M2 Color: Silver Material: Aluminum alloy Battery capacity: 4000mAh Input: DC 5V / 500~1000mA Output: DC 5V/1000mA Interface: 1 x USB2.0 OUT, 1 x mini USB IN Power indicator: 1 x LED red light Suitable for cell phones, iPhone, MP3/MP4, digital cameras, bluetooth products, game players, etc. moblie devices with USB port. Package included: 1 x Power Pack 1 x USB cable(35cm) Product Dimensions: 8.8 x 3.1 x 3.1cm, weight: 116g Package Dimensions: 18 x 13.3 x 3.8cm, weight: 193g