LED: 3 F5 LEDs, brightness: 10000 mcd LED lifespan 100,000 hours3.6V40mAh NiMH battery Motor: DCmotor(300C-11400) Solar panel: Voltage:1V Current:2mA Brightness: 20 Lumens Instructions for use This product is a portable lighting tool, suitable for various occasions. The product is designed with a carabiner to easily attach to backpacks or other items, but do not use this buckle to climb or hang anything heavy. The flashlight is mainly powered by nickel-metal hydride batteries, which can be recharged about 500 times when the battery capacity is low. There are two charging methods: hand crank charging and solar panel charging. This product uses a DC motor, and can be charged for 1 minute with a hand crank (120 times by hand) to provide lighting for 5 to 8 minutes. The solar panels are charged by absorbing light energy and can be fully charged in 10 hours under strong direct sunlight. Precautions: 1. When hand cranking, try to apply the force as evenly as possible. Too much force and too fast may damage the transmission system.2. In order to prolong the service life of the rechargeable battery, the product should be shaken by hand at least once a month (the time is not less than 3 minutes). This product should not be placed in a place with high humidity, please store it in a dry place. "all Products From Us Have Undergone Strict Quality Checks. if There Is Any Quality Problem Or You Are Not Satisfied With The Product contact Us. we Will Give You The Best Solution."