Merkury Innovations Quatro 25-Watt 4-Port USB Charger - White 25-Watt/4.9 Amp of output power to charge all your devices simultaneously Charge up to 4 mobile devices at once Hyper charge technology allows you to always receive the fastest charge in any port Built in over-current protection will automatically turn on if your device tries to pull too much power Universal 100-Volt - 240-Volt for world-wide use Works great with iPhone, iPad, iPod, Samsung Galaxy, Android smartphones and tablets, Bluetooth speakers, power banks and more