Feature: 1. 850nm Wavelength: The infrared flashlight can emit invisible high power 850nm infrared light, and needs to be used together with other night vision devices to make you see more clearly. 2. Zoomable: The infrared LED flashlight can realize zoom function through telescopic flashlight, that is long distance and short distance light filling. The range of light filling is about 100‑200 meters. 3. Shockproof and Waterproof: This zoomable infrared flashlight is designed with a shock proof, anti skid and waterproof body, and the tail is equipped with a lanyard, which is easy to carry and suitable for night activities. 4. Application: The infrared flashlight adopts advanced infrared LED with high efficiency and low thermal resistance, which is helpful for better night vision in camping, night fishing, night flight, navigation, caves and hunting. 5. Aluminum Alloy Shell: The infrared night vision flashlight adopts aluminum alloy shell, which is wear resistant, compression resistant, oxidation resistant, non corrosive and has a long service life. Specification: Item Type: Infrared flashlight Material: Aluminium alloy Weight: Approx. 98g/3.5oz Product Size: Shrinked: Length: 132mm/5.2in Head Diameter: 30mm/1.2in Tail Diameter: 25mm/1in Stretched: Length: 150mm/5.9in Head diameter: 30mm/1.2in Tail Diameter: 25mm/1in Power Supply Battery: 1pc 18650 lithium battery(Excluded) Light Source: IR infrared light Wavelength: 850nm Purpose: Used for night vision goggles, NVS, NVG DIY, cameras, mobile phones, monocular goggles, goggles and cameras that do not block infrared light as an auxiliary light supplement. Package List: 1 x Infrared Flashlight(Battery Not Included) Note: The human eye cannot see infrared rays. It is recommended to use the infrared flashlight together with night vision equipment to replace general cameras.