Arcadia ArcPak 7.4 - ACD740 7400mAh External Battery Pack for the iPhone 5/4S/4/3GS/3G, iPod Touch all versions; Samsung Galaxy Note/Nexus/S3/S2/S; HTC Titan, Sensation, ONE S/V/X, EVO Thunderbolt, Desire; LG Optimus series; Blackberry Bold, Curve, Torch; Motorola Razr HD/MAXX & Bionic, Atrix/2; Nokia Lumia 700/800/900 and GoPro, etc (ACD740)