Specification: Item Type: IR flashlight Material: Aluminium alloy Weight: Approx. 100g/3.5oz Product Size: Body Length: 135mm/5.3in Head Diameter: 30mm/1.2in Tail Diameter: 25mm/1in Power Supply Battery: 1 18650 lithium battery(Excluded) Light source: IR infrared light Wavelength: 850nm Usage: Used for night vision goggles, NVS, NVG DIY, cameras, mobile phones, monocular goggles, goggles and cameras that do not block infrared light as auxiliary lighting Package List: 1 x IR Flashlight Note: The human eye cannot see infrared rays. It is recommended to use with night vision equipment instead of ordinary cameras. Features ALUMINUM ALLOY MATERIAL: The IR flashlight has premium aluminum alloy shell, with the characteristics of wear resistance, compression resistance, oxidation resistance and corrosion resistance 850NM WAVELENGTH: The waterproof IR flashlight can emit invisible high power infrared light of 850nm, and needs to be used with other night vision equipment PORTABLE: The handheld IR flashlight adopts shockproof and antiskid body design, and the tail is equipped with a lanyard, so the IR flashlight is easy to carry APPLICABILITY: The IR flashlight is suitable for night activities, allowing you to have better night vision in camping, night fishing, night flight, navigation, caves and hunting INFRARED LED: This IR night vision flashlight adopts advanced infrared LED, which has high efficiency and low thermal resistance, and the IR flashlight is waterproof