4 X AA USB Portable Battery Emergency Charger For Mobile Phone (Black)

Description: Color: Black,White Input voltage: 2V-3V ( 4 x AA batteries) Output: Max 5.0V, 700mA Transfer Efficiency:88%~93% Size: 75mm*60mm*20mm Net weight:40g Features: Easy to use, just plug and charge. Compace size,easy to carry around. With 1LED lights,Can also work as a flashlight. The charger itself doesn't need to be charged. Designed with a USB interface, supports all devices that get charged via USB cable(USB cable not included), such as MP3/MP4 player, cellphone, iPod, iPhone, etc. Package Included: 1 x Portable Emergency Charger Note:The batteries is not included