Emergency flashlight with built-in rechargeable battery. Stores energy for a long time and no external battery required. High conversion efficiency: Turning the crank for 6 minutes gives one hour of light, so you are ready for any conditions. Classic and durable design. Khaki and gray color. Outdoor survival gear. Ideal gift for outdoor activities. With a quick-to-use carabiner, hang it on your backpack and take it for camping, hiking, etc. Dimensions: 124 x 45 x 32 mm. Technical specifications: Item type: LED flashlight. Material: Plastic. Body color: Green. Light color: White. Battery type: Ni-MH. Battery capacity: 40 mAh. LED lifespan: 100,000 hours. Charging with the crank: Turn the crank at 2 revolutions per second to recharge the battery. Turning the crank for one minute generates enough power for 8 minutes of lighting. To protect the long-term performance of the battery, do not turn the crank for more than 15 minutes. Charging with the solar panel: The solar panel can be charged under both natural and artificial light. Charging under direct sunlight for 30 minutes generates enough power for 10 minutes of lighting. 40 hours of direct sunlight can fully charge the battery. Instructions for use: Please turn the crank when the flashlight is off. Avoid placing the flashlight in contact with extreme heat or humidity. Please apply moderate resistance to the crank to avoid damaging it. To protect the battery performance, please turn the crank for 1 minute at least every month. Package contents: 1 x flashlight.