The PF4-774 Flasher is a four inch flasher. It is a chrome blade with half Green and half Chartreuse Scale tape on top and Chrome tape on the bottom, and features a built-in water activated light which turns on when it contacts the water, and turns off when dry. It’s unique circuits flash red, white and green on both sides of the flasher. The sealed battery lasts 80 hours or more and then the light can be easily replaced.