Weltool M2-CF "Purple Beard" UV 365nm Professional LED Flashlight
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The Weltool M2-CF "Purple Beard" UV 365nm Professional LED Flashlight is a highly specialized and advanced tool that combines precision engineering with a focused high-radiation beam to provide professionals with an unmatched UV detection experience. Designed for a variety of professional applications, the M2-CF uses a high-efficiency 365nm UV-A LED, delivering a remarkable LED radiation flux of 2100mW. This makes it an essential tool for a wide range of industries, from forensic investigations to industrial testing, where accurate and effective UV light is required. The compact body of the M2-CF is constructed from aerospace-grade aluminum alloy, ensuring both durability and portability, with a sleek black anodized finish that provides both style and protection against wear and tear.
The flashlight is powered by a single 18650 rechargeable lithium-ion battery, which is known for its reliability and longevity. It is a lightweight, portable device, making it easy to carry in the field, and it includes a steel clip for convenient attachment to gear or clothing. The M2-CF is equipped with a tail cap switch, designed to withstand up to 50,000 presses, offering an incredibly long lifespan for the switch mechanism. This switch allows users to cycle through two adjustable modes—low and high radiant flux modes—tailored to different lighting needs. Whether you are working in a forensic lab, conducting non-destructive testing, or exploring the great outdoors, this flashlight delivers the precise UV lighting you need.
The M2-CF's dominant wavelength of 365nm falls within the UV-A range, making it ideal for detecting substances and materials that are invisible to the naked eye. While the human eye can perceive light in the visible spectrum of 400-700nm, the 365nm wavelength emitted by the M2-CF produces very little visible light, ensuring that the flashlight's beam is not "bright" in the conventional sense. This is particularly useful in applications like forensic investigations, where the flashlight is used to reveal hidden substances such as blood, fingerprints, fibers, and other proteinaceous materials that fluoresce under UV light. The M2-CF is also indispensable for detecting fraudulent documents, such as passports, ID cards, and banknotes, where UV light helps reveal security features not visible under normal conditions.
In addition to its use in forensic science, the M2-CF excels in industrial applications like UV curing. Certain adhesives and inks, such as those used in printing, oil painting, and wood instrument processing, require a 365nm UV light for rapid curing. The M2-CF's powerful UV beam ensures that these processes are completed efficiently and accurately. Furthermore, the flashlight proves invaluable in non-destructive testing (NDT), where it is used to conduct fluorescence penetrant testing and fluorescent magnetic particle inspections. This is particularly important in fields such as shipbuilding, pressure vessel inspection, and mechanical maintenance, where ensuring the integrity of equipment is paramount.
Leak detection is another critical application for the M2-CF. In automotive and HVAC systems, the flashlight is used to detect leaks by illuminating fluids, such as ethylene glycol, which fluoresce under UV light. This makes it easy to spot leaks in car radiators, air conditioning systems, and engine components, helping to identify potential issues before they escalate. Similarly, the M2-CF is an excellent tool for ore exploration, where certain types of ore and minerals can be easily identified under UV light. It is also effective in identifying gems, amber, jade, and other valuable materials that fluoresce under the M2-CF's UV beam, making it an essential tool for geologists and mineralogists.
In terms of everyday use, the M2-CF is a powerful and versatile tool that can be used in a wide range of settings. Whether you're conducting a forensic investigation, performing maintenance on industrial machinery, or inspecting materials in a laboratory, the M2-CF provides reliable and precise UV lighting. It is also useful in the home, where it can help locate hidden pet stains, oil spills, or other contaminants in the kitchen, bathroom, or on clothing. Additionally, the flashlight is perfect for outdoor activities, where it reveals the hidden beauty of nature. Scorpions, for instance, glow under the M2-CF's UV light, making them easier to spot even in the dark. The flashlight also illuminates many plants, insects, mushrooms, and other natural wonders, offering a magical view of the world that is impossible to see under normal lighting conditions.
The M2-CF is designed with durability and reliability in mind. It features a high-reflection reflector made from aluminum alloy, which ensures optimal beam performance for long-range use. The flashlight is built to withstand harsh conditions, with an impact resistance of up to 1 meter and a water-resistant rating of IP67. The flashlight is also protected from over-discharge and reverse polarity, ensuring that the battery is never damaged, even if inserted incorrectly. A low voltage warning feature alerts users when the battery is running low, and once the warning appears, the flashlight will automatically turn off to protect the lithium-ion battery from excessive discharge.
The flashlight’s high-transmission tempered glass lens allows for maximum spectral radiosity, ensuring that the UV light is transmitted with high efficiency. This is complemented by the purple oxidized aluminum alloy protection bezel, which enhances the flashlight's durability while preventing it from rolling. The M2-CF is also designed with a convenient O-ring seal, ensuring that it remains waterproof even in challenging environments. With a compact size of 27.5mm in bezel diameter and 23mm in body diameter, the M2-CF is both portable and practical, making it an essential tool for professionals who need reliable UV light in their work.
With a runtime of up to 10 hours in low radiant flux mode and 4 hours and 20 minutes in high radiant flux mode, the M2-CF offers long-lasting performance, ensuring that you can rely on it for extended periods without needing to recharge. The flashlight’s radiant flux modes provide versatility, allowing users to adjust the intensity of the UV light according to their specific needs, whether it's a focused, intense beam for detailed inspections or a wider beam for general use.
The Weltool M2-CF "Purple Beard" UV 365nm Professional LED Flashlight is a powerful, reliable, and versatile tool that excels in various professional, industrial, and personal applications. Whether you're a forensic investigator, mechanic, geologist, or outdoor enthusiast, the M2-CF provides high-performance UV light that ensures accurate, efficient, and effective results every time.

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Turn counterclockwise to open the back cover, put the positive terminal of the charged 18650 high-quality lithium-ion battery into the flashlight toward the light head, and then turn clockwise to tighten the tail cover.
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The flashlight has reverse polarity protection. If the battery is inserted in the wrong direction, the flashlight will not be damaged, but it will not work. If this happens, check the battery.
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After installing the battery, lightly press (half-press) the tail switch button once to turn on the flashlight and release the switch to turn off. After the flashlight is turned off for more than 10 seconds, the default is low output mode every time it is turned on.
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When the flashlight is off, continuously lightly press and release the switch, and the flashlight mode will cycle from low to high.
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When any mode is turned on, press the switch hard (full press), there will be a "click" sound, lock the current brightness is always bright; press again hard, the switch has a "click" sound, the flashlight is turned off.
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When the battery voltage is too low, the flashlight will flash a warning, please replace with a new battery. After flashing the prompt, the flashlight will automatically turn off at any time to protect the lithium ion battery from excessive discharge.
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Case Material: Aerospace Aluminum Alloy construction; Black anodized finish
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Reflector: High reflection reflector of aluminium alloy, fits for long-range usage
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Emitter: High efficiency UV-A LED, peak wavelength of 365nm, continuous lifetime of about 1000 hours
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Tested with Weltool UB18-35 Rechargeable Lithium Battery Low radiant flux mode High radiant flux mode LED Radiant flux: 630mW 2100mW Spectral radiosity @38cm(15in): 6800μW/cm2 18200μW/cm2 Irradiated area (round) diameter of distance @ 38cm(15in): 20cm Central beam (round) diameter of distance @ 38cm(15in): 6cm Visible spectrum illuminance distance @ 38cm(15in): ≤ 64Lux ≤ 167Lux Runtime(h): Until radiosity falls to 10%: 10h25min 4h20min -
Battery: 1 x 18650 rechargeable Li-ion battery (not included)
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Switch : Tail cap switch (up to 50,000 presses)
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No need preheat, press to switch on, reduce the preheat time.
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2 adjustable modes, suitable for different usages.
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Reverse Polarity Protection
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Over-Discharge Protection
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Low Voltage Warning
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Fully regulated output, no PWM, no circuit noise
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High light transmission tempered glass lens for high spectral radiosity
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Purple oxidized aluminum alloy protection bezel
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Anti-slip, anti-roll design
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1 meter impact resistance
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O-ring sealed, IP67 water resistance rating
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Individually serialized
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Dimensions: (Bezel Dia.) 27.5mm x (Body Dia.) 23mm x (Length)135mm
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Weight: 80.5 grams (w/o battery)
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Accessories (included): O-ring
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Output: According to different production batches, there may be slight differences in parameters, subject to the actual product.
SHIPPING
The final shipping cost and estimated delivery timeframe will be available to you during checkout. Currently, we offer 3 International shipping methods which are steady and easy to track. Priority worldwide shipping, Premium ( Partial countries) and a faster Express shipping. The estimated times stated below are not guaranteed. An international package could experience delays like postal strikes or severe weather or Cov-19 situation. All shipping ways, PO Box address is not acceptable.
For some flashlights, there's a pure battery inside(phone charging),If We can not ship your packages via USPS or DHL,we'll ship your package in another way.
Note:
When you place an order for just the batteries, for easy shipping, faster and safe delivery, the batteries are placed in the flashlights.
If you don’t receive your order within the estimated time frame provided below and suspect that it might be lost in transit, please contact Flashlightgo Support ( support@flashlightgo.com ) and we can look into the order with the courier. Lost-in-transit requests must be submitted to Flashlightgo Support within 3 months of the date of shipping or before the courier archives the tracking information.
Option 1.
Express by DHL/UPS/Fedex/Aramax/SF etc ( there may be tax need to pay in this way),
The estimated time of delivery is usually 3-7 work days depending on the country. Includes detailed tracking and confirmation of delivery.
Option 2.
Premium ( 6-10days, All tax and Duty Paid),
All tax and duty are prepaid to carrier by Flashlightgo before shipping, so you dont need to pay any tax or duty when you get it.
Option 3.
Priority shipping(1-2 Weeks, average 10 days)
If we marked it is with all tax and duty paid, all tax and duty are prepaid to carrier by Flashlightgo before shipping, so you dont need to pay any tax or duty when you get it.
Learn more,Please click on Here.
To ensure that you get the desirable product, we allow a seven-day product return period. Any product return application outside this period will not be entertained.
All returned product must be unused and the original package should be kept.
Return:
We do not offer return for personal products like socks and hats or food, magazine and fragile or dangerous products The original receipt must be available for application of return.
Discount products:
No product return for discount products
Gifts products:
If the item is marked as a gift when purchased and shipped directly to you, it cannot be exchanged , refunded or warranty.
Exchange:
We only replace items if they are defective or damaged.
Exchange service are offered only to wrong deliveries or product damage not caused by client. If needed, please email to info@flashlightgo.com.
Warranty
How long is the warranty period?
Flashlightgo warrants to the original purchaser that the Product(s) shall be free of any defect in material or workmanship for a period of one year for labor and one year for parts from the date of the original order except the items listed below:
Chargers,Batteries and Other Accessories: 3 months warranty
Should the Product(s) supplied by Flashlightgo prove defective because of improper workmanship or material as reasonably determined by us, Flashlightgo agrees, at its option, to either repair or replace the Product free of charge, excluding any shipping or handling charges.
Learn more,Please click here.