Nitecore 25mm Blue Filter
The Nitecore Blue Filter is great for hunting because it makes blood trails stand out by making the blood appear black, which makes it easier to track an injured animal. Blue light won't attract insects. It works with night vision equipment, produces less disturbing light, and is good for navigation or map reading as it show contour lines better than red.
This Filter from Nitecore is a flashlight accessory that will fit a light with a 25.4mm bezel diameter. The filter lens is made of glass and finished with an anti-reflective lens coating for enhanced light transmission. The PC2805 durable plastic frame that is impact and heat-resistant.
Flashlight models this filter fits:
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