- Emergency military green hand-crank flashlight, built-in rechargeable battery, cranking in 1 minute (based on the speed of two rounds per second) can easily generate lighting for more than 10 minutes. 2. As a backup power supply method, solar panels absorb various light, such as strong and moderate sunlight, lights, etc. 3. Ergonomic sturdy design, comfortable and safe to hold in hand. Great for everyday, emergency and outdoor lighting. 4. Built-in durable carabiner clips securely to the backpack, perfect for outdoor activities. Portable Product size: 12.44.53.2CM Material: ABS plastic LED: 0.5W; Brightness: 30LM; Life: 100000 hours Battery: NiMH battery 3.6v/40mAh Solar panel: 5v 20mah Flashlight generator: 5V60mah Working time: 3-5H Solar panel size: 25mm*38mm Three LED high-brightness lamp beads, can illuminate 10 meters Color: yellow