395nm UV Blacklight Flashlight – Zoomable USB Rechargeable 600LM

ESMARTER 395nm UV Blacklight Flashlight – Zoomable, Rechargeable & Waterproof

Illuminate what the naked eye can't see with the ESMARTER K31 395nm UV Blacklight Flashlight. Pumping out 600 lumens of ultraviolet light at a precise 395nm wavelength, this powerful torch makes hidden stains, fluorescent minerals, scorpions, and cured resin glow instantly. Whether you're a crafter curing UV resin, a homeowner checking for hidden stains, or an outdoor enthusiast on a late-night adventure, this versatile UV light delivers every time.

Key Features

• 395nm UV Wavelength: Optimally tuned to reveal fluorescent substances, residues, and UV-reactive materials across a wide range of applications.
• 600 Lumens / 10W Output: High-intensity UV illumination that covers distances up to 50 metres for thorough inspections.
• Zoomable Focus: Twist the head to zoom in for pinpoint detection or zoom out for broad-area scanning — fully adjustable for every task.
• USB Rechargeable Battery: Built-in rechargeable battery charges via standard USB, saving you money on disposables and keeping you powered up anywhere.
• Waterproof Aluminum Alloy Body: Tough, corrosion-resistant aerospace-grade aluminum alloy construction with a waterproof rating — ready for wet environments and rugged use.
• CE & RoHS Certified: Meets rigorous European safety and environmental standards, giving you confidence in quality and compliance.
• Battery Included: Ready to use straight out of the box — simply charge and go.

What Can You Use It For?

• 🔍 UV Resin Curing: Quickly and evenly cure UV resin for crafts, jewellery making, and DIY projects.
• 🐾 Pet Stain Detection: Spot dried pet stains on carpets, upholstery, and flooring that are invisible in normal light.
• 🦂 Scorpion & Pest Detection: Scorpions fluoresce brilliantly under UV — perfect for outdoor camping checks.
• 💎 Mineral & Gem Identification: Make fluorescent minerals and gemstones glow for identification and collection.
• 🔦 Authentication & Inspection: Verify currency, ID documents, hotel rooms, and antiques with UV-reactive security features.
• 🎨 Crafts & Art Projects: Activate UV paints, inks, and adhesives for creative projects.

Specifications

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For more information on UV light safety, refer to the FDA's guidance on UV lights and lamps.

Frequently Asked Questions

Q: What wavelength does this UV flashlight emit and why does it matter?

A: This UV flashlight emits at 395nm, which sits at the near-UV/visible violet border. This wavelength is highly effective at exciting fluorescent compounds — making pet stains, scorpions, UV-reactive resins, minerals, and security ink glow vividly — while remaining visible enough for easy aiming in dark environments.

Q: How do I charge the ESMARTER K31 UV flashlight?

A: The K31 features a built-in rechargeable battery that charges via a standard USB cable (included). Simply connect it to any USB power source — laptop, wall adapter, or power bank — and charge until full. No disposable batteries required, making it an eco-friendly and cost-effective choice.

Q: Can this UV flashlight be used outdoors or in wet conditions?

A: Yes! The K31 features a waterproof aluminum alloy body, making it suitable for outdoor adventures, camping, and use in damp or wet environments. Its durable construction also means it can handle everyday knocks and drops without issue.

Q: How does the zoomable feature work on this UV light?

A: Simply twist the flashlight head forward or backward to adjust the beam focus. Zoom in for a concentrated spot beam ideal for detailed inspections, or zoom out for a wider flood beam to scan larger areas — making it versatile for UV resin curing, stain detection, and more.