Ultra-slim and stylish pen light available in various colors and LED types. This is the Infrared version of Streamlight's popular Stylus. Infrared 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.