Green and environmental protection: hand-cranked self-generating power can also be used for charging by sunlight, without external batteries, green, environmentally friendly, economical and safe. Solar lamp: no batteries required and can be charged in the sun; even without direct sunlight, it can be charged in well-lit interiors such as windows, balconies, even fluorescent lamps and incandescent lamps and can also be used to generate power by hand in rainy weather The panel charges via the daylight or simply from other source of light, Just one minute of easy cranking at approximately 120 rpm provides 20 minutes of light(charging time depends on the light intensity). ON/OFF switch with: 2 built-in lighting modes: 3 LED power (low), 6 LED power (high), the method of use is switching on and off by alternating pressing the lighting button. Foldable for portable devices: the LED lantern is compact when folded and can be easily transported and stored without taking up much space. Fold-away handles make the hand crank lantern torch convenient for hanging, carrying and hanging on tents or outside branches or backpacks and are perfect as survival kits for hurricans, emergencies, hikes and outages. Multi-purpose for one thing: high-quality ABS plastic shell, lightweight, strong and durable, is a good companion for mountaineering, camping, hiking, geological exploration, archaeology and other field activities. It can also be used for reading and repairing, prevents power outages, or to add to home emergency kits. Specification: Name: Hand-Up Crank Solar Lantern Color: Black Material: ABS LEDs: 6 LEDs Solar Panel: Amorphous Silicon Power source: hand-cranked + solar power Package size: about 17.7*8*6cm/6.97*3.2*2.36in Product weight: about 220g Working temperature: -20 to 60 Working humidity: 30% - 90% Charging: built-in 3.6V/80mAh rechargeable Ni-MH battery; hand cranking for one minute, continuous lighting for more than ten minutes; hand cranking can be fully charged in about 3 hours, and continuous discharge time is about 2 hours; solar charging 12-15 Can be fully charged in over an hour. Uses: hiking, camping, sailing, geological landscapes, power outages, cars, etc. Product Listing: 1 * Hand-Up Crank DynamoSolar Lantern Notes: 1. Due to the lighting effects and shooting angles, there is a color difference in the product, please understand. 2. Due to manual measurement, there is a tolerance in the product size.