Magnasonic Portable 5000mAh External Battery Backup Power Bank, 2.1A Fast Charging Dual USB, Power Indicator, Long Lasting, Ultra Slim Charger for iPhone, iPad, Android, Smartphones, Tablets (PB51) Fully charge your electronic devices on the go with a large power capacity of 5000mAh using the same superior lithium-ion polymer battery technology found in Apple devices Rapidly recharge two devices at the same time with its dual USB 2.1A output preparing you for your adventures Never get caught on empty again thanks to its clever, simple to read smart LED indicators that show exactly how much mobile charging power you have left and charging status Enjoy the versatility of this power bank, which is compatible with iPhone, iPad, Samsung, Android, HTC, Blackberry and other smartphones, tablets, digital cameras, Bluetooth speakers, and headsets Thinner than a deck of cards (10.1 x 6.2 x 1.4 cm), this ultra-portable power bank fits easily in your pocket or purse thanks to its sleek, compact design