Nitecore 40mm Red Filter
The Nitecore Red Filter is great for penetrating fog and smoke, and ideal for signalling. Red is also ideal when you want to preserve your night vision. Hunters use the red filter to avoid disturbing animals during pre-dawn hours -- animals see poorly in the red color spectrum. The filter is also useful for close range, non-tactical applications -- such as map reading -- as it reduces the intensity of light output.
For military operations; a red beam will always light the path ahead without jeopardizing night vision or strategic position. A red beam also perfectly illuminates star maps & lenses without affecting night vision. It won't attract insects.
This Red Filter from Nitecore is a flashlight accessory that will fit a light with a 40mm bezel diameter. The filter lens is made of glass and is coated on both sides for enhanced light transmission and heat tolerance. An impact-resistant rubber frame makes this filter durable; it also has an integrated lanyard attachment hole that offers convenient carrying. Since its lens can be removed, this filter can also be used to protect the flashlight bezel.
Flashlight models this filter fits:
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