PREMIUM QUALITY MATERIAL: This USB charger generator is made of high quality metal shell with non-slip foot pads, more stable, easy to assemble, and excellent performance at high altitudes and low temperatures. CONVENIENT TO USE AND CARRYON: This crank emergency USB charger generator is convenient to assemble, small and exquisite, easy to carry, and with internal power storage function. ENERGY SAVING GENERATOR: The portable crank generator with USB port, can charge for cellphone, USB nightlight, USB fan, power bank and other item with USB port.Note:this generator is not suitable for charge a car battery. CURRENT AND VOLTAGE: 3V/ 6.6A, 5V/4A, 6V/ 3.3A, 9V/ 2.2A, 12V/ 1.6A, 15V/ 1.3A,current is an unloaded current, which is connected to different products, and the load current will change after charging. WIDELY APPLIACTED FIELDS: This hand crank generator is suitable for field operations, field trips, rescue operations, natural disasters, survival training, emergency communications, long-term power shortages, tourism, etc. Portable hand-cranked and rechargeable emergency power supply. In the absence of commercial power and oil-based power generation in urgent need of electricity, manual power generation can be used to supply various electronic products. The hand generator can be actively used in field operations, field investigations, rescue operations, natural disasters, survival training, emergency communication, long-term power shortage, tourism, emergency power consumption, etc. The faster the shaking speed, the greater the power, and the peak power is about 20w. Specification: Material: Metal Product size: length 17cm*8cm*9cm Power generation speed: 200O RPM Power generation: about 2ow voltage and current: 3V/6.6A,5V/4A, 6V/ 3.3A,9V/ 2.2A,12V/ 1.6A,15V/ 1.3A The actual current will vary with the battery capacity of the product being charged. Weight: 758g/26.7oz