Weltool M4-365 "Blue Faced Beast" – High Power 365nm UV Flashlight | Professional 21700 Battery Light

The Weltool M4-365 “Blue Faced Beast” is a professional-grade 365nm UV flashlight engineered for maximum performance. Delivering up to 14,000mW of UV radiation flux, it features a patented cooling structure, black filter glass lens to eliminate stray light, and dual power modes for precision use. Designed for demanding tasks like UV curing, non-destructive testing (NDT), leak detection, forensic evidence collection, and mineral exploration, this powerhouse combines professional reliability with rugged durability.

Key Features

• Ultra-Powerful UV Output: 365nm wavelength with 14,000mW radiation flux

• Professional-Grade Build: CNC-machined T6 aluminum alloy with hard-anodized finish

• Patented Cooling: Through-hole head design for efficient heat dissipation

• Precision Optics: Black filter lens reduces stray visible light for pure UV output

• Durable & Reliable: IP67 waterproof, drop tested to 1 meter, and reverse polarity protection

• Safety Built-In: Over-discharge, low battery reminder, and temperature regulation

• Convenient Operation: Tail forward switch with more than 10,000 press lifespan

• Portable: Includes stainless steel deep-carry pocket clip for EDC readiness

Technical Specifications

What’s Included

• Weltool M4-365 "Blue Faced Beast" UV Flashlight

• 1 × High-Drain 21700 Rechargeable Li-ion Battery

• Portable Charger

• Stainless Steel Pocket Clip

• Spare O-Ring

• User Manual

Why Choose the M4‑365 “Blue Faced Beast”?

This is not your average UV flashlight—it’s a professional tool trusted for non-destructive testing, forensic analysis, UV curing, and mineral exploration. With industry-leading 365nm wavelength output and a patented cooling system, the M4-365 delivers unmatched performance in a compact, field-ready design.

Safety Note: 365nm UV light is invisible to the naked eye. Always wear protective UV safety glasses and never shine on eyes, skin, or reflective surfaces.