21 LED UV 395-400 nm flashlight
Long service life
Light weight
Great for checking notes, credit cards, fluorescent inks (invisible inks), cracked glassware, or even crime scene.
Suitable for outdoor activities as well
Emitter type:21 UV LED
Emitted color:purple
Powered by 3 x AAA alkaline batteries (not included) (work time:more than 20 hours)
Aluminum
shockproof
DO NOT look into this device while operating and DO NOT shine in any person's eyes.