Review on Escolite 2 Pack UV Flashlight Black Light: Find Pet Urine & Bed Bugs with 51 LED 395nm Ultraviolet Detector - Ideal Companion for Pet Odor Eliminator by Eric Temple

I ordered two packs. The headlights look good, with no noticeable quality defects. Be sure to find the directional arrow on the battery holder inside the flashlight to ensure the flashlight works once inserted. I was disappointed that one flashlight was significantly less bright than the other. I switched batteries from one flashlight to another but the problem remained. It's unimaginable how that could be. If for some reason LEDs have less luminous flux in lower light. It would be great if the retailer would help fix the problem instead of taking me to Revain with my issues.