Feature: 1. Infrared Flashlight: This is not a common flashlight, retractable zoom, 850nm wavelength IR light, which can make the prey clearly visible in the dark night, professional and convenient in using. 2. Matching Use: IR flashlight needs to be used with night vision goggles, NVS, NVG DIY, cameras, mobile phones, monoculars, goggles and cameras that do not block infrared light as auxiliary fill light. 3. Battery Power Supply: Powered by 1PC 18650 lithium battery (not included) or 3PCS AAA batteries (not included), long lasting battery life, energy saving and environmental protection. 4. Aluminum Alloy Shell: The metal shell is anti splashing, impact resistant and durable, easy to clean and wipe, and can cope with a variety of harsh and complex outdoor environments. 5. 850nm Wavelength: Emits high power invisible 850nm infrared rays, and no light is visible to the naked eye. It is recommended to use it with night vision monocular and goggles (not included). Specification: Item Type: IR Flashlight Material: Aluminum Alloy Retract Size: Approx. 140x35x30mm / 5.5x1.4x1.2in Extend Size: Approx. 160x35x30mm / 6.3x1.4x1.2in Power Supply Battery: 1PC 18650 lithium battery or 3PCS AAA batteries (not included) Wavelength: 850nm Light Source: IR light Uses: For night vision goggles, NVS, NVG DIY, cameras, mobile phones, monoculars, goggles and cameras that do not block infrared light, as auxiliary fill light.. Package List: 1 x Tail Switch with Cable1 x Flashlight1 x Battery Compartment1 x Battery Cartridge Sleeve