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Filters

FEREI FILTERS & DIFFUSERS
Transform Your Light. Adapt to Your World.
FEREI Filters and Diffusers instantly convert your headlamp, tactical flashlight, or dive light into a multi-scenario tool. Switch from a piercing long-distance beam to a wide, glare‑free glow, or apply a colored lens for specialized signaling and low‑visibility work，Secure, quick‑attach design ensures they stay put through motion, weather, and depth.
Whether navigating a trail without blinding your team, conducting a covert operation, or reading a map in a tent, FEREI gives you the right light—for every moment, every mission.
Change Your Beam. Keep Your Momentum.FEREI — Adventure Further.
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D32

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D49

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D46

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D75

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D01

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D02 Ferei HL50 Green filters

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D43 Red filter

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D58 Green filter