TwoinOne Functionality This 12V car heater provides both heating and cooling modes for yearround use. It defogs and defrosts in winter and delivers a refreshing breeze in summer, making it a practical accessory for any vehicle. Heating Capability Designed for efficiency, this car heater warms up within about 5 seconds and quickly clears ice and condensation from your windshield. The fast heat function helps you achieve a clear view on cold mornings. UserFriendly Design Easy to install and use. Plug into the cigarette lighter socket for quick setup, or secure it with doublesided tape for a stable, semipermanent fit in compatible vehicles. It is ready to operate right after installation. Durable and Safe Construction Built from quality ABS and heatresistant materials, this heater uses copper wiring to protect your vehicle's battery and electrical system. It features a temperature vent to ensure safe, reliable operation and performance. Key attributes Function: heating and cooling in one device for yearround use Compatibility: 12V car power, cigarette lighter socket compatibility, can be mounted with doublesided tape Material: quality ABS, heatresistant construction, copper wiring Performance: rapid 5second warmup, efficient cooling mode for immediate airflow Use scenarios Winter mornings: defog and defrost the windshield quickly for a clear, safe view. Summer drives: provide a quick, refreshing breeze to cool the cabin. Allseason comfort: immediate airflow and humidity reduction during long trips or in humid conditions.