【VERSATILEPORTABLE GENERATOR】: The manual crank generator is suitable for fieldwork, outdoor camping, backcountry survival, hiking, and night riding, field investigation, rescue operations, natural disasters, survival training, emergency communications, and long-term power supply. 【DETAILED PARAMETERS】: Voltage: DC 220V, DC 12V, USB 5V, Output Power: 30W, Power Generation: 20W, Output Current: 3A, Battery: Polymer Lithium Battery 6600mAh (Included), Product Size: Approx. 23.5 x 12 x 8cm / 9.3 x 4.7 x 3.1inch. 【WITH INDICATOR LIGHT】: When charging with the charger, you can observe the charging status according to the indicator light on the charger. When the indicator light is red, the charging is in progress, the indicator light turns green, and the charging is completed. In addition, you can also press the 220V switch to check the power. 【HAND CRANKED POWER GENERATION】: To ensure normal power generation, 1‑3 revolutions per second is enough. The faster the hand cranking, the greater the power generation current. The generated electricity is directly stored in the built in power lithium battery pack, and both forward and reverse hand cranking can generate electr 【APPLICABILITY】: Press the 220V switch to use electrical appliances within 20W in an emergency, such as: mobile phone charging, energy saving lamps, LED lights, stereos, etc.