I got this flashlight after Adam Savage shared it on Tested. I wanted to use it to cure UV resin when I fill defects in my models. I had a different UV flashlight, but it had a number of discrete UV LEDs. Not bad for wide coverage, but I wanted a smaller area. Wow, it cures the resin instantly. I was having fun building things with toothpicks dipped in resin.It has a solid build and the sliding focus comes in handy for my usage. My only regret is I didn't see that the flashlight is available without the battery and charger. I already have 18650 batteries and a special charger for them. $8 cheaper, but I'm still happy with the flashlight.For reference, the resin used in the photo is Elegoo grey ABS-like.