This mini and suitable hand-winding power supply is designed for emergency use. Just wind it by hand slightly, it can charge the device freely. With built-in USB interface, it is easy to connect to all sorts of USB devices.Specifications:Material: plasticSuitable Device: universalWorking Mode: hand-CrankingColor: blueUSB Ports: 1Output: DC 5VMaximum Output Voltage: DC5.5VMaximum Output Current: 600mAInterface Type: USBMaterial: ABSItem Weight: 60g / 2.12ozPackage Weight: 65g / 2.29ozItem Size: 60 * 48 * 30mm / 2.36 * 1.89 * 1.18inPackage Size: 100 * 60 * 40mm / 3.94 * 2.36 * 1.57inNote:Do not use it in wet environment, so as to avoid electric leakage.The hand-cranked charger produces low power for its manual operation, so it can not be charged to the products of larger power, such as some smart phones and tablet PC.Non-stop shake, people would be no electricity. So it can not be fully charged for your appliance.It is not magical of the charger, of course it is not as handy as charging treasure. It is just a funny little toy.Package list:1 * Hand-Cranking Power Supply