Ultraviolet LED light can be harmful if shone directly in the eye, but it has some very useful applications. Just like the blue light, ultraviolet can detect bodily fluid that might otherwise be missed. It can also be used to detect certain minerals and proteins at the scene, even in soils. It is often used to detect counterfeits, in money, art and antiques. Ultraviolet light can be used to bring out fluorescent colors, as in black light applications. It can be used for coding and cryptic messaging. Fishermen may find this light useful in bringing their luminescent lures back to life. Ultraviolet light can be used to recharge any luminescent items, such as watch faces, compass needles, etc. This light is also helpful to the hunter needing to follow blood trails.

Squeeze to light or flip the switch on the side.