12V/24V Car Heater provides rapid heating to quickly defrost and defog windshields in cold weather conditions, improving visibility. Plug and go: designed to plug into your vehicle's cigarette lighter socket for easy installation without tools. Yearround use: adjustable hot and cold air settings offer multifunction performance for all seasons. Wide compatibility: suitable for all vehicle owners and compatible with 12V and 24V vehicle electrical systems. Practical use scenarios: On winter mornings to clear ice and condensation quickly. During rain or snow to maintain clear visibility. When the interior temperature drops rapidly after parking to restore comfort fast. Key benefits: Fast windshield clarity and improved driving safety. Simple operation with no wiring or professional installation required. Flexible temperature control for defrosting, defogging, and cabin warming.