1.[Reliable Safety Protection] Crafted with durable, heat-resistant ABS material, this heater is built to withstand high temperatures without risk of bursting. The built-in cigarette lighter fuse and overload/overvoltage protection ensure , worry- use. Note: This high-powered heater naturally warms the cord to around 17°C~45°C. Please discontinue use if it exceeds this range. 2.[3-Second Heating to 100°F] This car heater uses high-grade alloy heating wires and a PTC heating pad to ensure fast, warmth up to 100°F. In just 3 seconds, it circulates hot air to defrost and de-fog, making your drive r and cozier this winter. 3.[Defrosts and Defogs in No Time] Say goodbye to foggy windows! This heater quickly clears your windshield and reduces interior humidity, giving you clear visibility and a r drive. Aim the vents toward your windshield for the results. 4.[Dual Heat and Cool Mode for Year-Round Comfort] With both heating and cooling modes, this car heater is perfect for every season. Enjoy cozy warmth in winter and refreshing coolness in summer, with airflow that's soft and even all year round.