The Weltool M2-BF "Purple Beard" UV 365nm Professional Black Light LED Flashlight is a compact, high-performance tool designed for precision UV detection and professional-grade applications. Featuring a high-efficiency UV-A LED with a peak wavelength of 365nm and a radiant flux of 2100mW, this flashlight stands out as an exceptional choice for a wide range of specialized tasks. Its optimized UV wavelength delivers minimal visible light, ensuring superior performance compared to other UV flashlights operating at 380-400nm. This precision makes it an invaluable asset for applications that demand accuracy and clarity.

Crafted from aerospace-grade aluminum alloy with a black anodized finish, the M2-BF is both durable and lightweight. At only 80.5 grams without the battery, it is easy to handle and highly portable. The flashlight features a sleek, anti-slip design with a purple oxidized aluminum bezel for added protection. Its impact resistance up to one meter and IP67 water resistance rating ensure reliable operation in challenging environments, from dusty industrial sites to outdoor settings exposed to moisture. The inclusion of a high-reflection aluminum reflector enhances long-range UV detection capabilities, making it suitable for tasks requiring concentrated and precise beams.

The M2-BF's primary feature is its professional-grade UV detection capability, which supports a variety of uses across industries. In forensic investigations, it excels in detecting body fluids, blood, fingerprints, and fibers, as well as analyzing bite marks and bruises. It is also a valuable tool for document authentication, allowing for the verification of passports, ID cards, visas, credit cards, and banknotes. The flashlight’s UV beam can reveal fraudulent alterations, making it indispensable for law enforcement and legal professionals. Its ability to detect chemical residue makes it effective for arson investigations and identifying car ID labels in theft forensics.

Engineers and technicians will appreciate the M2-BF’s performance in non-destructive testing (NDT). The flashlight facilitates fluorescence penetrant testing and magnetic particle inspection for specialized equipment like ship components, pressure vessels, and turbine blades. Its compact size and focused beam make it ideal for inspecting hard-to-reach spaces, ensuring accurate and efficient results. Automotive professionals can use the flashlight to identify leaks in cooling systems, radiators, and air-conditioning units by observing fluorescence reactions in the presence of a tracer dye. Similarly, it is useful for detecting oil and pipeline leaks, providing critical insights for maintenance tasks.

The M2-BF also serves unique roles in scientific exploration and outdoor activities. Geologists can employ its UV beam to identify ores, gems, amber, and jade, as these materials often exhibit distinct fluorescence under UV light. Similarly, archaeologists and collectors can use it to verify artifacts and antiques. Outdoor enthusiasts will find the flashlight helpful for detecting scorpions, glowing fungi, and other fluorescent organisms during nighttime excursions. Its versatility extends to home use, where it can uncover pet stains, kitchen contaminants, and cleaning residues, ensuring hygienic living spaces.

The flashlight is equipped with advanced features for user convenience and performance. It offers two adjustable modes—low radiant flux and high radiant flux—to suit various tasks. In the low mode, the flashlight delivers 630mW of radiant flux, while the high mode outputs 2100mW. Both settings provide a continuous runtime until the radiosity falls to 10% of the initial value, with up to 10 hours and 25 minutes in low mode and 4 hours and 20 minutes in high mode. The flashlight’s fully regulated output eliminates PWM and circuit noise, ensuring consistent and reliable performance.

A key design element is the black filter glass lens, which effectively blocks visible light beyond 365nm, producing a purer UV beam. This feature enhances accuracy in applications requiring fine details. The flashlight also includes reverse polarity protection and a low voltage warning to safeguard the battery and ensure safe operation. When the battery voltage drops too low, the flashlight flashes a warning before shutting off to prevent over-discharge. It is powered by a single 18650 rechargeable lithium-ion battery (not included), which can be installed easily with the positive terminal facing the light head.

The tail-cap switch, rated for up to 50,000 presses, enables simple and efficient operation. Light presses allow users to cycle through modes, while full presses lock the desired mode in place or turn the flashlight off. For added convenience, the flashlight defaults to low mode after being off for more than 10 seconds, ensuring a safe starting brightness.

Measuring 135mm in length, with a bezel diameter of 27.5mm and a body diameter of 23mm, the M2-BF is compact and ergonomic. Its design is complemented by included accessories, such as an O-ring for enhanced water resistance. Individually serialized, each unit offers a unique identifier for tracking and authenticity.

In summary, the Weltool M2-BF "Purple Beard" UV flashlight combines precision engineering, robust construction, and versatile functionality to meet the needs of professionals and enthusiasts alike. Its specialized 365nm UV beam, compact design, and durable features make it a powerful tool for applications ranging from forensic investigations and industrial inspections to outdoor exploration and home hygiene checks. With its thoughtful design and advanced capabilities, the M2-BF is a reliable and indispensable companion for tasks requiring high-performance UV illumination.

M2 UV flashlight is also called black light, adopts high efficiency pure 365nm UV-A LED with the LED radiation flux of 2100mW. The flashlight body is compact with a steel clip included as an accessory, powered by 1 piece of Li-ion battery, compact and portable.

The visible wavelength range to human eye is 400-700 nm, while the dominant wavelength of the M2 flashlight is 365 nm with less visible light, so the M2 is not "bright" in eyes and it's not designed for use of illumination. From which it proves that it's pure 365 nm wavelength with a better performance than the ultraviolet light of other wavelengths (380-400 nm).

 

 

M2 "Purple Beard" is a professional-grade UV detection flashlight, which is more suitable for professional fields:

UV curing: Some curable adhesives specify the 365nm UV for rapid curing, M2 UV flashlight can also be applied to ink curing field, such as printing, oil painting and wood instrument processing.

Forensic investigation & evidence collection: Proteinaceous materials emit fluorescence when illuminated by UV light. So M2 can be used to check the body fluid, blood, fingerprint, fiber and also to analyze the bite mark and bruise. UV light usually is used for detection of fraudulent documents such as ID card, visa, passport, credit cards or banknotes. The UV light can be used for arson investigation though the spattering of chemical combustibles and used for car theft forensics by identification of car ID label, and also for vehicle accident analysis.

Non Destructive Testing (NDT): M2 is a compact flashlight especially suitable for on-site fluorescence penetrant testing and fluorescent magnetic particle inspection of special equipment in ships, pressure vessels, draught fan blades and other narrow spaces.

Leaks detecting: By the fluorescence reaction of ethylene glycol in the cooling system, M2 black light can be used to check the leaks of the car radiator and the air-conditioning refrigerant by adding a fluorescent agent. And it works on detecting engine leaks and oil pipeline leaks.

Ore exploration: Some kinds of ore cannot be quickly identified by the naked eye, but they present various colors under UV beam and can be quickly noticed. It also applies to screening of gems, amber and jade, artifacts, antiques, and discovering traces of fraud and glue.

Hygiene: Riboflavin validation in pharmaceutical companies, inspection of human body fluids and other tissues pollutants in public places, cleaning of oil stain, and the presence of traces of urine from rodents such as rats in the warehouse.

Home: Find pet defecations, oil or contaminant in kitchen and bathroom, check sanitary products, clothing, cosmetics, paper towels with fluorescer.

Outdoor activities: The outer shell of the scorpion glows under the M2 UV flashlight's beam, making it easy to find even in the dark. Many mushrooms and flowers, fruits, seeds or some insects, bees, and small crabs are more magical under the illumination of M2 than at night or in daylight.

    M2 series have 3 models: M2-OL (Even-beam), M2-CF (Focused high radiation beam), and M2-BF (Focused pure beam), no matter you are a law enforcement officer, mechanic, engineer, maintenance person or workman, warehouse manager, outdoor enthusiast, laboratory researcher, M2 "Purple Beard" can be a good helper!

Operation instruction(M2-BF):

• 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.

• 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.

• 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.

• When the flashlight is off, continuously lightly press and release the switch, and the flashlight mode will cycle from low to high.

• 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.

• 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.

• Case Material: Aerospace Aluminum Alloy construction; Black anodized finish

• Reflector: High reflection reflector of aluminium alloy, fits for long-range usage

• Emitter: High efficiency UV-A LED, peak wavelength of 365nm, continuous lifetime of about 1000 hours

• Output: According to different production batches, there may be slight differences in parameters, subject to the actual product.

• Battery: 1 x 18650 rechargeable Li-ion battery (not included)

• Switch : Tail cap switch (up to 50,000 presses)

• No need preheat, press to switch on, reduce the preheat time.

• 2 adjustable modes, suitable for different usages.

• Reverse Polarity Protection

• Over-Discharge Protection

• Low Voltage Warning

• Fully regulated output, no PWM, no circuit noise

• Black filter glass lens, effectively filtrate the visible light beyond 365nm for purer UV beam.

• Purple oxidized aluminum alloy protection bezel

• Anti-slip, anti-roll design

• 1 meter impact resistance

• O-ring sealed, IP67 water resistance rating

• Individually serialized

• Dimensions: (Bezel Dia.) 27.5mm x (Body Dia.) 23mm x (Length)135mm

• Weight: 80.5 grams (w/o battery)

• Accessories (included): O-ring

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.