General description Portable Car Heater is a versatile heating solution designed for vehicles, featuring a 360° rotatable design. It functions as both a heater and a defroster, ensuring comfort during cold weather. Technical specifications Voltage: 12V/24V Power: 150W Dimensions: 5.7" L x 4.1" W x 3.1" H Power supply mode: Powered by the vehicle's cigarette lighter Installation Place it on a non-slip mat or fix it with double-sided tape for secure positioning. Usage Recommended to use the heater when starting the vehicle to optimize heating efficiency. Due to power limitations of the cigarette lighter, consider adding a power limit. For better performance, purchase a thicker power cable to connect directly to the battery.