High efficiency for clear visibility - Uses high-efficiency PTC ceramic heating technology to melt light fog and frost quickly and create a warm air flow within seconds, delivering a clear view of the road ahead. Constant warmth for any trip - Intelligent constant-temperature heating adapts to the car interior to maintain steady warmth during both short and long drives. Even heat distribution - Multidirectional vent design with adjustable openings allows multiple angles, ensuring even heat distribution around the cabin so every seat stays comfortable. Easy installation and broad compatibility - Compact and space-saving, suitable for all vehicle types. Can be placed on the dashboard or under the seat for quick and easy installation in private cars, commercial vehicles, and SUVs. Use scenarios - Frosty mornings: quickly defrost and de-fog windows for immediate visibility. - Long highway trips: steady, comfortable warmth throughout the journey. - Family trips in SUVs: even heat coverage for all passengers. Key attributes - Function: defrost/defog windows, provide constant warmth, multiple-angle vents - Compatibility: all vehicle types (dashboard or under-seat placement) - Size/material: compact portable unit with PTC ceramic heating elements - Performance: fast warm air, even cabin distribution