The VoltStar EPC-1000-7 EcoCharger is the most energy efficient way available today to charge your Apple device. Be careful when comparing the EcoCharger with other energy saving chargers. Other chargers may reduce their power draw when idling but they cannot claim drawing ZERO power under idle conditions. The EcoCharger is unique in that it consumes ZERO power when not charging your Apple device for maximum savings and benefits. The EcoCharger also saves energy with its high efficiency design that exceeds Energy Star II standards. Just press a button conveniently located at the end of the charging cable when you want to charge your Apple device. The EcoCharger will charge your device and automatically disconnect the charger from the AC outlet for ZERO power draw when it senses that the device is completely charged. A small LED status indicator turns off when the charger goes to ZERO power. This automatic shut-off to ZERO power also lengthens the life of your Li-Ion battery by limiting the topping-off charging time that shortens the life of expensive Li-ion batteries. For peace of mind, The EcoCharger also has built-in heavy duty surge protection not offered in other chargers to protect your expensive-to-replace Apple device from damaging AC power line surges and voltage variations when charging. When the charger has shut off to ZERO, it provides the ultimate surge protection as the charger and Apple device are detached and isolated from the AC power line and damaging surges. The universal AC input voltage allows you to use this charger worldwide. Unlike cheap throwaway aftermarket chargers, the EcoCharger and its unique benefits will last for several generations of portable devices you will own. Its premium high quality design insures reliable trouble-free charging performance and long life backed by a 1 year warranty. An Apple compatible 30-pin adapter cable is included. This product was designed in the USA and is UL Listed.