It can be actively applied in fields, field operations, field trips, operations, natural disasters, survival training, emergency communications, long-term power shortage, tourism, emergency power, etc The USB port can be chargerd for phone, powerbank, mini USB light, fan and other item with USB port, convenient and platical Hand crank generator, the faster the shaking speed, the greater the power, the maximum power is about 20w, great for emergency and power-off situation Convenient to assembly, easy to carry, portable generator for outdoors use Metal outer case, with anti-slip foot pads, make it useful and you will feel effortless and time, Weight: 1.81219979364 pounds, Manufacturer: QUXVUIS