The Naztech PB15000 Universal Power Bank is the ultimate backup power source for all your mobile devices. With included adapter tips for smartphones, MP3 players, tablets, laptops and netbooks, this is the only backup battery you will ever need. Within its sleek and portable design, the PB15000 packs a colossal amount of power that translates into hours of extra usage. Perfect for road warriors and busy professionals, the PB15000 allows you to spend less time charging your device and more time using it.