An aluminum heat sink for reduced weight, a slimmer profile and an extended service life of up to 20,000 hours highlight the features of this new series that is a direct replacement for the 12V Series 31. USCG (A16) certified for two mile visibility for Power & Sail vessels up to 65'. Completely sealed and waterproof. Tested and certified for electromagnetic interference. Case Material: Polycarbonate Dimensions: 2-3/4"W x 2"H x 1-5/8"D Volts: 12V Draw: 0.18A Wiring: 7" insulated wire leads Warranty: Three years