iHome External Battery Pack for Universal/Smartphones - Rose Gold PREMIUM LI-ION BATTERY - High quality Lithium Ion batteries provide many recharges. Lithium batteries have a long life and hold charge while not in use. This unit packs an amazing 3,000 mash of power ULTRA SLIM DESIGN - Ultra slim 1 cm. thick aluminum body provides the ultimate in portability. Thinner than most wallets, this will easily fit in your pocket or in a purse. UNIVERSALLY COMPATIABLE - Charge this battery pack with any standard micro USB cable and charger! Connect almost any device with the standard USB output! Universal compatibility EXTRA TIME! - Despite its ultra slim design, this battery packs 3000 mash of capacity, a full charge for most smartphones! Its good up to 15 hours of web browsing, 19 hours of talk, 66 hours of music METALLIC COLORS - Available in several metallic colors. Grab the color of your choice and your back up battery will look as great as your new iPhone, Galaxy, Motorola, LG or any smartphone.