Estone Cell Phone Emergency Charger USB Hand Crank Manual Dynamo For MP3 MP4 Mobile PDA This mini and suitable hand-winding charger is designed for emergency use. Just wind it by hand slightly, it can charge the device freely. With this built-in USB interface, it is easy to connect to all sorts of USB devices Save your spending, safe use , and not harm or damage to your mobile phone Can be repeated use, light weight, small size, convenient travel use The inherent emergency lighting Will the USB interface insert affiliated connecting charger USB port place