21 LED UV 395-400 nm flashlight
Long service life
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
Powered by 3 x AAA alkaline batteries (not included) (work time:more than 20 hours)
DO NOT look into this device while operating and DO NOT shine in any person's eyes.
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