iHome External Battery Pack for Universal/Smartphones - Gold PREMIUM LI-ION BATTERY - High quality Lithium Ion batteries provide many recharge cycles. Lithium batteries have a long life and hold charge while not in use. Packing 6,000 mash into small package. ULTRA SLIM DESIGN - Ultra slim 1 cm. thickness 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 is ultra slim design, this battery packs 6,000 mash of capacity. Its good for up to 29 hours of web browsing, 37 hours of talk time, 133 hours of music or 29 hours of video. 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.