SEACHOICE 04981 Zamak Chrome-Plated 12V Bi-Color 2.75-Inch Boat Navigation Bow Light Red/green bow light provides 1-mile visibility For Use with Sail or powerboats under 39' Enhances safe navigation anytime there's poor visibility Watertight construction designed to withstand corrosion Size: 2-3/4 inch x 2-1/2 inch x 1 3/8 inch