This ALONEFIRE SV140 UV flashlight is a beast.

It packs a 60W 365nm UV LED (with 40 cores total) that puts out serious black light – way more than your average keychain light.

The hard black filter lens blocks out ambient light, so the UV beam is pure and powerful.

It's built from aluminum alloy for good heat dissipation, and it comes with a USB-C charging port and a digital LCD screen that shows you exactly how much battery is left.

You get four rechargeable batteries in the box, plus a pair of UV protective glasses – nice touch.

Use it for finding pet urine, detecting scorpions, curing resin, spotting minerals, checking IDs or currency, and even finding bed bugs.

Two modes: high and low.

One heads-up: this thing runs hot.

After a few minutes, it'll throttle down to 60-70% power to protect the LED – that's normal.

Charge time is about 6 hours, and you'll get 2 to 4.5 hours of run time depending on the mode.