... USB device 3.Slim 4.Fast speed external backup battery for laptopexternal battery,Powerstation for smartphones&tablets————3,14,2012ModelDescriptionSBL-MPH-PowerProduct name: Powerstation ... . Compatibility: smartphones/tablets Unmatched battery capacity, Innovative design, Added features for ease of use. Specifications: Product Dimensions: 2.28 in x 4.09 ...