For powerboats and sailboats less than 12m or 39.4'. Chrome-plated brass. 1nm visibility. Case Material: Chrome-plated brass Mounting Hardware: #8 FH sold separately Volts: 12V Draw: 0.80A Built-In Flag Staff Socket 6-3/4" x 3-7/8" Base, 1-5/8"H Replacement Bulb: Model 297376 Warranty: Five years