What is the brand and model number of the uv led used in this device?

Thanks for your question. The LEDs in all our models are custom made and form part of our OEM device offering. The LEDs are not mass produced nor off-the-shelf generic. This has advantages. Whilst it is a matter of user preference we found that mass-market generic examples have inherent issues which contribute in one way or another to undesirable side-effects. For example, sometimes the LEDs are over-driven as well as other factors like thermal runaway, wavelength peak, flux density, irradiance, LED lifetime, etc. have parameters which we believe users could do without or do with less of. Therefore, you will find variation and design issues one of them being that some 365nm LEDs actually peak at 367nm - small difference we know but it does have an impact. Whilst many users will not be interested in the actual details, but they will feel the effects. This is why we decided to view the UV flashlight as a "whole-of-system UV emitting device" - using the axiomatic design engineering approach to put "things in balance" as much as possible. Hope that provides some input. [uvBeast]

Can it detect ringworm?

Theoretically, this would work. I've not yet used this particular model, but at 365nm wavelength, it is a comparable alternative to a Wood's lamp. Thus, certain fungi would fluoresce using this light.

How do you know if it is charging? Plugged it in, pushed red ‘on’ button once, so I am assuming that it is charging, don’t know how to know for sure?

Yeah, read the instructions multiple times. No (charge) light of any kind is coming on regardless of the configuration. Tried everything for two (2) hours. Yes, the white plastic cap has been removed so battery makes contact. Yes, when I hit the power button the light does come on for a second, then back off—probably low battery, but at this point may indicate another malfunction. Also, I have the V3 365nm Beast w/o these issues—so not a newbie to the Beast. Junk. Returning.

Does the battery charging LED change colors when charging is complete?

Hi. Yes the charge indicator light will first be RED and then turn GREEN when fully charged. PLEASE ENSURE that the battery is oriented correctly - the positive end must face the LED head and also that the white plastic battery insulation disc has been discarded. Otherwise the charge procedure will be unsuccessful. PLEASE NOTE that the charge time can vary according to several factors we'll mention: (1) The USB power source, (2) If the battery is in sleep mode it can take a longer time for a full charge cycle to complete. So please wait until the charge indicator light turns green. The battery may go into sleep mode if it is over discharged in order to protect the cell. Trickle or slow charge occurs in order to preserve the cell. Charge times will then resume to normal. Please take a look at our FAQs if you require any further assistance or reach out to us at support@uvbeast.com. FAQs: uvbeast.com/pages/help-center

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Description

🔦 Light up your professional edge with uvBeast V3 MINI—small but beastly!

USER SMART DESIGN - Double-click activation prevents accidental ON in your pocket—no more surprises.
ALL DAY RELIABILITY - 5 hours continuous runtime with no dimming—work uninterrupted, always.
UNMATCHED UV PURITY - Filtered 365nm UV with ultra-low visible light leak for crystal-clear detection.
PLUG PLAY CHARGING - No-fuss USB recharge—no caps, no hassle, just power when you need it.
POWER PACKED PORTABILITY - Mini size, massive UV punch—fits your pocket, fuels your workflow.

The uvBeast New V3 365nm MINI is a professional-grade, rechargeable UV flashlight featuring a high-definition 5-core 365nm LED that delivers 450mW of pure ultraviolet light. Compact and lightweight at just over 3 ounces, it offers a wider UV beam, longer 5-hour runtime without dimming, and accidental activation protection via double-click switch. Crafted from anodized aluminum and water-resistant, this USA-stock device is designed for professionals seeking powerful UV detection in a sleek, portable package.

Specifications

Special Feature	Does NOT dim after a few mins of use like typical 365nm UV lights, Low contamination UV output (more useable 365nm UV for superior results), Rechargeable, Upgraded [Oct2023 Ed.]: More UV 365nm power, Wider UV beam, Longer working time, Accidental operation protection {ATTN: Double-click to turn ON]
Color	Anodized Black
Power Source	Battery Powered
Light Source Type	UV LED 365nm
Material	Aluminum
Included Components	Accessories
Product Dimensions	2.02"D x 0.64"W x 0.64"H
Voltage	3.7 Volts
Battery Cell Composition	Lithium Ion
Item Weight	90 Grams
Number of Batteries	1 Lithium Ion batteries required. (included)
Water Resistance Level	Water Resistant
Warranty Type	1 year manufacturer
Brand	uvBeast
Battery Description	Lithium-Ion
Runtime	5 hours
Bulb Base	GU5.3
Finish Type	Anodized Aluminum
Light Source Wattage	450 Milliwatts
Mounting Type	Handheld
Recommended Uses For Product	Outdoor
Manufacturer	uvBeast
Size	Portable Handheld
UPC	633632141133
Part Number	uvB-V3-365-MINI
Item Weight	3.17 ounces
Item model number	uvB-V3-365-MINI
Batteries	1 Lithium Ion batteries required. (included)
Shape	Rectangular
Finish types	Anodized Aluminum
Number of Lights	1
Specific Uses	Fit for Professional and Commercial Use
Special Features	Does NOT dim after a few mins of use like typical 365nm UV lights, Low contamination UV output (more useable 365nm UV for superior results), Rechargeable, Upgraded [Oct2023 Ed.]: More UV 365nm power, Wider UV beam, Longer working time, Accidental operation protection {ATTN: Double-click to turn ON]
Switch Style	Silicon Rubber
Batteries Included?	Yes
Batteries Required?	Yes
Wattage	450 Milliwatts
Bulb Features	Low contamination UV output, Upgraded UV power and beam, Longer working time, Accidental operation protection, Rechargeable, No dimming after use