Sea Dog Ceramic 12 Volt Windshield Heater - DefoggerThe Sea Dog Ceramic Windshield Heater works great for keeping small windows clear of condensation. Comes with a 5-1/2 foot long cord and plugs into a 12 volt power socket. The base pivots and rotates, and can be attached with included Velcro strip. Amps: 12.5 A; Volts: 12 V; Watts: 150 W; BTU: 550;