Description:  Compatible for all devices that get charged via USB cable， such as MP3\/MP4 player， cellphone， iPod， iPhone， etc. Besides， it can also be used as a LED torch. Mini size and ultra-light weight， easy to carry around.<br>  <br> Features:<br>  <br> Color: Black， Blue， Green， Orange， Red， Yellow， White<br> Input voltage: DC 3V ( 2 x AA batteries)<br> Output: Max 5.0V， 500mA Transfer Efficiency:88%~93% Size: 75mm*30mm*20mm The charger itself needn't to be charged， it need to be powered by two AA batteries. (Batteries are not included in the package).<br>  <br> Package Included:   <br> 1 x Emergency Charger  More Details: