Uncover the Unseen. The Professional’s Choice for Shortwave UV.

Equip yourself with the UltraFire ZV-254nm. Featuring a true 5W UVC output and a premium black filter lens for zero light bleed.
UltraFire® ZV-254nm UV Flashlight
UltraFire® ZV-254nm UV Flashlight
UltraFire® ZV-254nm UV Flashlight
UltraFire® ZV-254nm UV Flashlight
UltraFire® ZV-254nm UV Flashlight
UltraFire® ZV-254nm UV Flashlight
UltraFire® ZV-254nm UV Flashlight
UltraFire® ZV-254nm UV Flashlight
UltraFire® ZV-254nm UV Flashlight
UltraFire® ZV-254nm UV Flashlight

UltraFire® ZV-254nm UV Taschenlampe

254NM | ZWB2 UV Filter

Robust und präzise liefert der UltraFire ZV-254nm einen echten 254nm Kurzwellen-UVC-Strahl mit einem spezialisierten Schwarzfilterobjektiv, 5W Hochleistungsabgabe und CNC-gefräster Haltbarkeit – ideal für Rockhounding, die Erkennung fluoreszierender Mineralien und professionelle Inspektionen.
$29.85
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3-Year Warranty

Flashlight Operation & Safety Guide

⚠️ CRITICAL SAFETY WARNING ⚠️

Invisible & Dangerous: 254nm UVC light is invisible to the human eye and severely damages living tissue.

Eye & Skin Protection: Always wear UVC-blocking safety goggles. Never point the beam at your eyes, skin, other people, or pets.

Operation & Battery

Battery: Insert 1x 18650 lithium-ion battery with the positive (+) end facing the head. (Remove battery to charge).

Power: Click the tail switch for On/Off (Single mode).

How to Test: Because the UVC beam is invisible through the black filter lens, never look directly into the lens to check if the light is on. Shine it on a piece of white printer paper to see the fluorescent reaction.

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What's Included

  • UltraFire ZV-254nm UV Flashlight 
  • Rechargeable 18650 2600mAh 3.7V lithium-ion battery 
  • DX-3 Battery Charger

Built for the Hunt & The Lab.

Whether you are a dedicated rockhound trekking through the dark for rare fluorescent minerals, or an industrial technician checking for micro-fractures in critical components, the ZV-254nm is your essential field companion.
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See What Standard UV Misses.

Standard 365nm UVA: Dull, lifeless rocks.

UltraFire 254nm UVC: Vibrant, glowing Calcite, Fluorite, and Willemite.

Fact: 90% of fluorescent minerals only react to shortwave UV. Stop leaving the best finds behind.
STANDARD 365NM UV
ZV-254NM

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Why the ZV-254nm Outperforms the Rest.

Them

Cheap plastic lenses, heavy visible white light bleed, weak output.

UltraFire ZV-254nm

Specialized high-temperature vacuum-plated reflector, a dedicated black filter lens for pure 254nm transmission, and a rugged CNC-machined solid aluminum body with hard anodizing.
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Simple, Single-Mode Operation.

No complicated menus. Just load a fully charged 18650 battery, put on your required UVC safety goggles, and click the tactical tail switch. One click delivers instant, full-power 254nm shortwave illumination.
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Engineered for Accuracy & Durability.

Rated IP54 for dust and water resistance and weighing just 2.71 oz (without battery), this light is built for harsh environments. Trusted by gemologists, NDT (Non-Destructive Testing) technicians, and forensic teams for its reliable 60mW radiant power.
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What the Pros Are Saying.

"This light completely changed my rockhounding loadout. The black filter lens is incredible—no purple glare, just pure, intense fluorescence from my finds." 

– Richard Price, Verified Buyer & Mineral Enthusiast
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Frequently Asked Questions (FAQ)

Q: Is the 254nm light safe to use without safety glasses?

A: No, absolutely not. The ZV-254nm emits shortwave UVC light, which is extremely hazardous to human skin and eyes. Direct exposure can cause severe burns and permanent eye damage. You must wear certified UVC-blocking polycarbonate safety goggles at all times while operating this flashlight.

Q: I turned the flashlight on, but the beam looks very dim or completely dark. Is it broken?

A: Your flashlight is working perfectly! Shortwave 254nm UV light is completely invisible to the human eye. Additionally, the premium ZWB2 black filter lens is designed to block almost all visible light. To test if it is on, shine the beam onto a piece of white printer paper or a known fluorescent mineral—you will see a bright, glowing reaction. Never look directly into the lens to check if the light is on.

Q: Can I use this flashlight to find pet urine or cure UV resin?

A: No. Finding pet stains, curing UV resin, and checking ID watermarks require a Longwave UVA flashlight (typically 365nm or 395nm). The ZV-254nm is a Shortwave UVC flashlight specifically designed for fluorescent mineral detection (rockhounding), industrial non-destructive testing (NDT), and forensic trace evidence.

Q: How do I charge the flashlight? Can I plug a USB cable into it?

A: The ZV-254nm requires one 18650 lithium-ion battery and does not have a built-in USB charging port. You will need to remove the battery and charge it using a standard external lithium-ion battery charger.

Q: Will this light work for rockhounding during the daytime?

A: While the 5W output is powerful, UV fluorescence is easily washed out by ambient sunlight. For the best and most vibrant results when hunting for minerals like Calcite, Fluorite, or Willemite, you should use the flashlight at night or in a completely dark environment.

Q: Is the flashlight waterproof?

A: It is IP54 rated, which means it is highly dust-resistant and can easily withstand light rain and splashing water during outdoor expeditions. However, it is not fully submersible, so do not drop it into deep water or use it for underwater diving.
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Customer Reviews

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Shop with Absolute Confidence.

Your purchase is backed by UltraFire’s 30-Day Money-Back Guarantee. If the ZV-254nm doesn't meet your rigorous field standards, send it back for a full refund. No hassle, no risk.

Product Specifications

Brand / Model: UltraFire ZV-254nm

Wavelength: 254nm UVC (Shortwave)

Power Output: 5W

Radiant Power: 60mW

Working Current: 0.5A

Operating Voltage: 3.7V - 4.2V

Battery Required: 1x 18650 Lithium-ion (External charging required)

Light Modes: 1 Mode (On/Off)

Lens Type: Dedicated Black ZWB2 Filter Lens

Reflector: High-Temperature Vacuum-Plated Aluminum Alloy

Body Material: CNC-Machined Solid Aluminum (Hard-Anodized Finish)

Color: Black

Switch Type: Tail Cap Clicky Switch

Ingress Protection: IP54 (Dust and Water Resistant)

Dimensions: Length: 4.72 in (120mm) | Head: 0.91 in (23mm) | Tail: 0.91 in (23mm)

Weight: 2.72 oz (77g) (Excluding battery)

Upgrade Your Gear Today.

Shortwave lights of this caliber are in high demand and our current batch is moving fast. 

Don't head into your next expedition under-equipped.
$29.85

UltraFire® ZV-254nm UV Taschenlampe