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Bought this 100 LED UV light and a pair of 51 LED ones. The 100 is remarkably bright! It is quite a bit larger than the 51s. So, if u need brighter, go with the 100. If u need a more conventional flashlight size the 51 is good. I’m using the 100 to spot Tomato Hornworms after sunset. This lights them up like a green fluorescent tube! The plants look red, so it is super ez to c the pests! Nice to get the yellow safety glasses too.

Used for a UV florescence display for kids. Works great, lasted for three hours of continuous use and bashing around by small children. Enough output that you can feel warmth coming off the leds. Consider filter glasses for you and your camera.

Works great at finding pet and children stains...maybe a little too well! Can’t wait to try it in the desert looking for scorpions. Works better with the glasses provided. Good value!

Good solid feeling light. Works great.

I like it.