Ultra-slim and stylish pen light available in a variety of colors and LED types. This is the Ultra-Violet version of Streamlight's popular Stylus. Ultra-Violet lights are use to illuminate objects otherwise undetectable to the human eye. This is a light with a very specific purpose that excels in portability. Designed for law enforcement, security, technicians, and anyone who needs a sleek, readily available lighting tool. Streamlight's Stylus penlights fit comfortably in your pocket and come with a glare guard protector. These penlights are flat out the best in the business.