High performance heating - 800W high power with 3 air outlets for real-time heating. Its high heat conversion rate helps ensure glass shine and provides effective de-icing and defogging in winter. Two-speed control - Double gang switch with a 2-speed setting for fast heating, enabling quick defrosting and fog removal of the front windshield for improved visibility and convenience. Safety and efficiency - Built-in energy-saving PTC heating system with stable current output and multiple protections: over current, over voltage, over temperature, short circuit, and over power. Safe, energy-saving and low noise operation. Compact and versatile - Overall size: 23 x 12 x 9.5 cm (9 x 4.7 x 3.7 inch). Designed for easy connection to the car main power supply and compatible with 12V and 24V vehicle electrical systems. Use scenarios - Before driving in winter, quickly defrost and defog the windshield for clear visibility. - On cold mornings, rapidly warm the cabin area to improve comfort as you prepare to drive. - In humid or damp conditions, efficiently remove window fog and moisture to maintain good visibility. Compatibility and practicality - Designed to integrate with typical car electrical systems (12V/24V) with straightforward connection to the vehicle power supply. Includes 3 air outlets to distribute heated air effectively.