MaGeek 3350mAh Lipstick-Sized Portable Charger External Battery Power Bank with UniCharge Technology for iPhone, Samsung, and More (Black) Ideal companion for smart phones, relieve your stress of "Low Battery" Ultra compact, crush-proof aluminum design (3.9 x 0.9 x 0.9in, 2.7oz). Exclusive UniCharge technology: Auto detect your device type, compatible with iPhone, iPad, Samsung, HTC, etc, electric current up to 1Amp. 3200mAh@3.7V High Battery Capacity: Provide almost full charge (or 10+ hours talktime) to iPhone 6, Galaxy S5, and most other phones. Including: one MaGeek Atom1 3200mAh External Battery, one Micro USB cable, one Quick Guide, 18-month warranty and friendly customer service.