Infrared light is invisible to human eyes. It is designed to be used with night vision device.(Only a small and faint red glow on the LED to show you that the torch is on). The Perfect IR Illuminator for Your Night Vision Needs: Yukon Photon Ward D vision DIY night vision Pulsar N550/750 Armasight Drone Pro NiteSite NS50/200 Viper-Wolf Specifications: Brand:UniqueFire LED: IR 850nm Range: 80-200 meters Material: Aluminum Alloy Weight: 50 g (Without Flashlight) Construction: Shockproof and waterproof Operate temperature: -5 ~ +50 degrees Celsius Brightness Mode: Single Mode(ON/OFF) Package: 1 x LED Pill (Not include Flashlight )