ESMARTER UV LED Blacklight Flashlight – 395nm Violet Light Torch

Illuminate the invisible with this compact, powerful 395nm UV LED Blacklight Flashlight. Whether you're checking for pet stains, spotting scorpions in the dark, verifying currency authenticity, or inspecting surfaces for fluorescent residues, this pocket-sized torch delivers crisp, high-intensity ultraviolet light exactly where you need it.

Made in Mainland China.

Why You'll Love This UV Flashlight

395nm Ultraviolet Wavelength: Highly effective at revealing fluorescent substances, invisible stains, counterfeit markings, and biological traces invisible to the naked eye.
Adjustable Focus Zoom: Simply stretch or compress the barrel to shift between a wide flood beam and a tight focused spotlight — perfect for scanning large areas or zeroing in on a specific spot.
High/Low Switch Modes: Two brightness settings (up to 5W) let you conserve battery or maximize output depending on the task at hand.
IPX-4 Waterproof: Splash-resistant construction makes this torch reliable for outdoor adventures — camping, hiking, fishing, and nighttime yard checks.
Durable Aluminum Body: The skid-proof, black-anodized aluminum shell is tough, lightweight, and built to last. At just 92 × 25 × 25 mm, it slips easily into a pocket, bag, or clip to your gear.
Wide Battery Compatibility: Works with a single 3.7V 14500 Li-ion cell or a standard AA battery — maximizing flexibility wherever you are. (Battery not included.)
Integrated Tail Rope & Carry Clip: Convenient carry options so your torch is always within reach.

Common Uses

Pet stain detection on carpets, upholstery, and flooring
Scorpion spotting at night
Counterfeit banknote and document verification
Fluorescent dye leak detection
Nighttime fishing (float visibility, lure checking)
Forensic and hobbyist surface inspection
Gem, mineral, and bead authentication

Specifications

UV Wavelength	395–410 nm
Power	1–5W
Body Material	Aluminum & Plastic
Color	Black
Dimensions	92 × 25 × 25 mm
Waterproof Rating	IPX-4
Battery	1× 3.7V 14500 or AA (not included)
Zoom	Binocular / Adjustable Focus
Lighting Distance	50–100 m
Switch Modes	High / Low
Certification	CE

Package Contents

1 × UV LED Flashlight (battery not included)

Care Tips

Minimize impacts and friction to extend product life.
Although IPX-4 splash-resistant, avoid prolonged submersion or direct water erosion to maintain optimal performance.
Store with battery removed during long periods of non-use.

Pair this UV torch with our other handy gadgets for a fully equipped toolkit:

For more information on UV light safety and best practices, visit the FDA's guide on Ultraviolet (UV) Radiation.

Frequently Asked Questions

Q: What battery does this UV LED flashlight use?

A: This UV blacklight flashlight is compatible with either a single 3.7V 14500 lithium-ion rechargeable battery or a standard AA alkaline battery. Please note that the battery is not included in the package.

Q: What is the best wavelength for detecting pet stains?

A: A 395nm ultraviolet wavelength is highly effective at causing pet urine and other organic residues to fluoresce, making them clearly visible against flooring, carpet, and upholstery even in dimly lit rooms.

Q: Is this flashlight truly waterproof?

A: This flashlight carries an IPX-4 waterproof rating, meaning it is splash-resistant from any direction. It is suitable for outdoor activities in light rain or damp conditions, but it is not designed for submersion in water.

Q: Can this UV torch be used to verify banknotes and documents?

A: Yes. The 395–410nm ultraviolet light will cause the fluorescent security markings found on most modern banknotes, passports, and official documents to glow brightly, making it a handy tool for quick authenticity checks.