Yes, if the blood stains show a brown fluorescence color under ultraviolet light, it can be judged that there should be blood stains.

How do you get 2 AA batteries in it?

It was powered by 2*AAA batteries.

Can this test uv blocking of sunglasses?

The wavelengths range of the ultraviolet light in the sunlight is 10nm-400nm, this blacklight flashlight is 395nm. You can only use this blacklight fashlight to test if your sunglasses can block 395nm blacklight, for other wavelengths light of UV light, you need other lights.

Has anyone used these to detect Freon leaks ? Do they work for that

Yes, it can detects Freon leaks.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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COSOOS 2 UV Black Light Flashlight, 2 Pack 395nm Mini Pen Light with Clip, Waterproof Ultraviolet Flashlight for Leak, Pet Urine, Scorpion, Hotel Inspection, Dry Stain and Bed Bug.

COSOOS 2 UV Black Light Flashlight, 2 Pack 395nm Mini Pen Light with Clip, Waterproof Ultraviolet Flashlight for Leak, Pet Urine, Scorpion, Hotel Inspection, Dry Stain and Bed Bug.

Product ID: 475927900

Details

Color
Black
Light Source Type
LED
Material
Metal
Power Source
Battery
Special Feature
Lightweight

💧IPX4 water resistant

📏Compact 5.5in pen size

🔦395nm UV wavelength

₩26484

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔦 Illuminate the unseen, own the moment.

POCKET READY POWER - Ultra-lightweight (1.1oz) with a sturdy metal clip for hands-free, on-the-go use.
DOUBLE THE DETECTION - Two pen lights in one pack—never be caught without your UV sidekick.
EFFORTLESS OPERATION - One-button on/off simplicity powered by common AAA batteries—no tech degree needed.
INVISIBLE MADE VISIBLE - 395nm UV light reveals stains, scorpions & counterfeit IDs with pinpoint accuracy.
WEATHERPROOF RELIABILITY - IPX4 splash-resistant design keeps you prepared rain or shine.

The COSOOS 2 Pack UV Black Light Flashlights feature a powerful 395nm wavelength LED that detects pet stains, scorpions, counterfeit currency, and more. Compact and lightweight at just 1.1 ounces each, these pen lights come with removable metal clips for easy portability. Built with durable alloy and IPX4 water resistance, they’re perfect for indoor and outdoor use. Powered by 2 AAA batteries each (not included), this set offers reliable, no-fuss operation for professionals and pet lovers alike.

Specifications

ASIN	B0B92PDCSV
Additional Features	Lightweight
Battery Description	Alkaline
Battery Type	Alkaline
Best Sellers Rank	#3,076 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Pet Urine Detectors #53 in Handheld Flashlights
Brand Name	COSOOS
Color	Black
Customer Reviews	4.5 4.5 out of 5 stars (2,356)
Finish Types	Smooth Metal
Included Components	2*uv pen light
Item Dimensions D x W x H	5.5"D x 1.1"W x 0.8"H
Item Type Name	2 pack uv pen light
Item Weight	1.1 ounces
Light Source Special Features	395nm wavelength detection
Light Source Type	LED
Manufacturer	COSOOS
Manufacturer Part Number	GFIUFF80y
Material Type	Metal
Model Number	CS-DZ002-B
Mounting Type	Clip-on Mount
Number of Batteries	2 AAA batteries required.
Number of Items	2
Number of Light Sources	2
Number of Packs	2
Power Source	Battery Powered
Recommended Uses For Product	Pet urine detection, Dry stain identification, Scorpion finding, Fluorescent agent identification, Bathroom and hotel room inspection, Counterfeit currency and fake ID detection, Precious minerals, rocks, or jewelry identification
Set Name	2
Shape	Pen
Size	2 Pack
Style Name	Compact
Unit Count	2 Count
Voltage	3 volts
Water Resistance Level	Water Resistant
White Brightness	50 lumens

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₩26484

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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