【DOUBLE COOLNESS FOR SUMMER】: Hayousui's dual head car seat fan utilize 5-blade vortex technology, generating a stronger and more consistent stream of cool air. The brushless motor ensures powerful airflow while keeping noise levels to a minimum, making it perfect for uninterrupted long drives or road trips with loved ones during hot summer days | 【UNIQUE INDEPENDENT CONTROL OF DUAL FANS DESIGN】: The twin car fan heads can be controlled independently, with two separate buttons enabling you to operate one or both fans at different speeds based on the temperature. Featuring three-speed wind settings - low, medium, and high - the portable car fan for backseat allows you to customize airflow according to your preferences and weather conditions | 【360°ROTATION & ADJUSTABLE LED LIGHT】: Designed with a 360° adjustable silicone hose, this compact car seat cooling fan delivers a refreshing breeze to passengers and pets throughout the vehicle. Easily adjust the fan angle to cool both front and back seats, ensuring a comfortable environment for babies or pets in the rear seat. Additionally, it features two brightness levels for the LED light, providing visibility in dimly lit car interiors | 【CONVENIENT TO USE】：It is easy to install with the spring clamp mechanism, simply clipping both ends onto the headrest bar. This 5V/1.4A USB powered auto ac fan with plug is compatible with various devices, such as power banks, car chargers and AC adapters. Compatible with most 12V/24V car models, including vans, trucks, SUVs, and RVs. It only works after plug in USB power source. If the current of your car is insufficient(lower than 5V/1.4A), it is recommended to use a cigarette lighter adapter for power supply. | 【FRESH AIR CIRCULATION】: Hayousui's car circulation fan is indispensable for car, boat, and vehicle owners ect. It efficiently removes moisture from windshields on cold, rainy days, and reduces hot air, cigarette smoke, or dust accumulation, ensuring a pleasant and odor-free environment for all passengers. Compact and adjustable, it optimizes space while delivering optimal air circulation for a comfortable journey.