Specification: Product name: solar hand-cranked flashlight Light source: 3*LED Material: ABS shell Size: 124*45*32mm Weight: 86g Brightness: 13 lumens Battery: Built-in Ni-MH rechargeable battery (3.6V, 40mAh) The solar panel absorbs light charge (up to 1200 Lux sunlight intensity, at 30 minutes or more, it can support 3 LED lights for more than 10 minutes, in this case, the battery can be fully charged for 40 hours.) Features: 1. The emergency LED flashlight has a built-in rechargeable battery, which can store energy for a long time and can be charged by solar energy and generate power by hand, without external batteries 2. As a backup power method, solar panels can absorb all kinds of light, such as strong and medium sunlight, lights, etc. 3. Ergonomically sturdy design, comfortable and firmly held in the hand, very suitable for daily, emergency and outdoor lighting. 4. The built-in and durable carabiner is firmly clipped to the backpack, which is very suitable for outdoor activities. Portable size suitable for outdoor use: 124x45x32mm / 86g. 5. Efficient energy conversion, through a 1-minute crank (based on a speed of two rounds per second), it can provide 8 minutes of lighting time.