Description: Standard USB interface, 5V output, suitable for charging various USB devices and mobile phones(Except for IOS phone). Built-in LED lights up and power is being generated and your phone is being charged. New electronic components, in the emergency time, do not let the phone power failure; Small and light, easy to carry. Can be used as a mobile phone charging toy when boring, can also be active activities for a long time working hands, decompression. Specification: Attention:Just for emergency use, you can't fully charge your phone. Color:Blue, Green Maximum output voltage: DC 5V Maximum output current: 300 mA The Battery charging time: 1 Minutes Talking time:3-5 Minutes Size Chart: 60x49x31mm/2.36x1.93x1.22inch Package Includes: 1set USB Hand Dynamo Charger(4 Pack) Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!