Streamlight 940nm IR Illuminator

From the Amazon Listing

• 940nm Infrared Light Wavelength: This ir flashlight emits invisible 940nm IR light, please do use the right night devices that match the 940nm ir light, without the right night vision devices you can't see the infrared light or can't obtain the efficient night vision effects.
• 940nm IR Flashlight for Night Activities: With the night vision devices, you can clearly find the infrared light that emitted by this infrared led flashlight, the devices such as infrared camera, night vision scope, night vision monitor, monocular¡­., they won't block the infrared light that emitted by infrared illuminator flashlight and help you have better night vision for hunting, night camera, night observation...
• Single Mode/One Mode 940 IR Flashlight: 1 switch mode(On/OFF). Press the tail button of the ir flashlights to turn on/off it, when the ir night vision flashlight is turning on, you can look at the led bulb of infrared flashlight, and by your naked eyes you can only see a dim faint red glow on the bulb.
• The IR light can shoot to the further, but it also depends on you night vision devices.
• The Battery is not included: This ir led flashlight use One battery(Battery Size: Length of 2.55inch and Diameter of 0.71inch). Battery is not included in the package.