Product Review

SK68 Flashlight(1 pack)
Material: Aluminum alloy
Reflector: Convex Lens
Lamp: A 5W UV LED beads
Wavelength: 365nm
Zoomable: Focus adjustable
Battery: 1 X AA / 1 X 14500 Battery (no included)
Size: 3.7X0.8X1.0in
Weight: 52g
One light modes: Steady light

Performance And Application
Checking the money
Checking the security code
Detecting invisible pet urine
Hunting scorpions and minerals
Detecting bed Bug

How to use
1.The black light work by showing phosphors- a substance that emits visible light because of radiation. Since the naked eye cannot see them, we are reliant on help to spot them, the black light make this possible.
2.The flashlight need to use with batteries, one AA or one 14500 battery(not include).

The Science Behind The Thing
UV lights reflect off of any given substance containing phosphor, something found in highlighters, fabrics, etc. Keep in mind, though, it's not the purple light that is reacting with the phosphor - it's the invisible UV light. Technically, UV lights are radiation - it is a lower frequency wavelength than X-rays. So don't shine these lights directly into your eyes!