Bigger, brighter, stronger, this light is a version of a multi-color marker light. Low light output so it is not distracting but bright enough to be seen by other divers. This light easily clips on to mask straps, belts, straps and any many other locations. Colors include red, green, blue, purple, and yellow in single unit. All colors have a flash mode as well. Powered by 2 standard CR2032 coin cell batteries, the Easy Clip can last up to 24 hours. A Lanyard is included to keep it attached to your equipment.