The Lumen 50S is a hands-free wrist-mounted light. It has three modes: solid, blinking, and red blinking. It has an adjustable hinge which allows you to lay it flat against your wrist or stand it up at a 90 degree angle. The band can also be adjusted to be worn around your ankle. This small multi functional light can be used as a piece of safety gear and as a secondary light to aid your vision.