Amphipod Swift-Clip Cap Light For the road warriors getting their training and racing mileage in during low-light hours, the Amphipod Swift-Clip™ Cap Light helps to guide their way. This super lightweight clip-on style light provides bright white light from dual-mode LEDs in flashing strobe style and constant beam illumination. This light fits securely on running and baseball cap brims. Features rubberized housing around the light for easy grip. Includes and uses easy-to-replace CR2032 coin batteries.