About this product: Emergency flashlight with built-in rechargeable battery. Stores energy for a long time and no external battery needed. High conversion efficiency: cranking for 6 minutes gives an hour of light, so you're ready for any condition. Classic and durable design. Khaki and gray color. outdoor survival gear. Ideal gift for outdoor activities. With a quick-to-use carabiner, clip it to your backpack and take it camping, hiking, etc. Dimensions: 124 x 45 x 32 mm. Product Description: Technical characteristics: Item type: LED flashlight. Material: plastic. Body color: green. Light color: white. Battery type: Ni-MH. Battery capacity: 40 mAh. LED life: 100,000 hours. Crank charging: Turn the crank at 2 revolutions per second to recharge the battery.Turning the crank for one minute generates enough energy for 8 minutes of lighting. To protect long-term battery performance, do not crank 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 energy for 10 minutes of lighting. 40 hours of direct sunlight will fully charge the battery. Instructions for use: Please turn the crank when the flashlight is off.Avoid exposing the lamp to extreme heat or humidity. Please apply moderate resistance to the crank so as not to damage it. To protect battery performance, please crank the crank for 1 minute at least every month. Package contents: 1 flashlight.