Lewis N. Clark Compact Surge Protector USB Charger, White, One Size Charge electronic devices simultaneously while freeing up an ac power outlet or a usb port on your laptop For use with iPod, iPhone, smart phones, mp3 players and more SB charger output: 5v  1a , electrical rating: 15a 120v, 60hz, 1800w Not compatible with ipad, tablet or other computers 1.6in x 2.25in x 1.25in