12V/24V Car Windshield Defogger Defroster 2 in 1 Defogging Defrosting Heating Fan 360 Degree Rotating Anti-Fog Automobile Heater. Feature: Dual Functionality, Powerful Defrosting, Quick Heating Feature, Simple Installation, Adjustable Convenience. Suitable for most vehicles, including large trucks, and ideal for use in cars, while camping, traveling, or simply warming up during winter.