Features 10 Watt (2.1 amps), dual USB ports. Detachable micro USB cable has slim connector that will fit most cases. Smart IC chip technology prevents your device from overcharging, overheating and overcurrent. Use included micro USB cable or other existing USB cables to charge USB powered devices such as tablets, smartphones, digital cameras and GPS systems. Input: 100-240V AC Output: DC 5V 10 Watt (2.1 Amps).