【4000mAh High-Capacity Battery for Extended Use】: With a built-in high-capacity battery, this portable fan for car offers up to 1.5 to 16 hours of continuous use on a single charge, depending on the speed and number of fan heads in use. The cordless design ensures your car stays cool even when the engine is off. Additionally, the headrest fan for backseat can be used while charging. ⚠️ Note: This fan for car is USB-powered and please use a stable 5V/2A power supply. Disconnnect power before leaving vehicle. 【Dual-Head Design for Maximum Airflow】: Experience double the cooling power with our advanced dual-fan system. Featuring a 100% pure copper motor and a 5-blade turbine design, this car seat fan for baby rear facing maximizes airflow, providing stronger and more efficient ventilation. It effectively dissipates heat and enhances comfort during hot summer journeys 【3-Speed Settings for Customized Comfort】: Customize the airflow with 3 distinct speed settings, ranging from gentle breezes to strong gusts suitable for hot days. This portable backseat car fan allows you to adjust the airflow according to your preferences and weather conditions. Each fan head can be controlled independently, enabling you to operate one or both fans simultaneously 【Full 360°Rotation】: The upgraded adjustable design allows for 360-degree rotation of both the fan heads and the body, making it easy to position and store. Easily adjust the fan angle to cool both the front and back seats. This compact 12 volt fans provides a refreshing breeze for kids or pets in the rear seat. Additionally, the carseat cooling fan features a finely crafted protective grid to prevent small fingers from coming into contact with the blades 【Ultra-Quiet & Easy Installation】: The mini battery car fan boasts a powerful yet silent motor that operates smoothly, producing negligible noise that won't disturb sleeping children or working passengers. The USB portable car fan comes with a sturdy clip that securely attaches the fan to the back seat headrest. Installation and removal are quick and easy, requiring no tools; you’ll be set up in seconds. Stay Cool and Comfortable on the Go with Our Portable USB Car Fan! Experience unparalleled comfort during your travels with our car air conditioning! Designed for ultimate convenience and efficiency, this compact 5V/2A auto fans is the perfect travel companion for any journey. Crafted with a sleek and modern design, this car seat neck fan effortlessly integrates into your vehicle with rechargeable lithium battery. Say goodbye to the hassle of batteries or external power sources – When the battery is depleted, it can be plugged in various usb device for use, laptop, or power bank, and enjoy instant relief from the heat. With adjustable speed settings, you can easily personalize the airflow to meet your specific needs. Choose between a gentle breeze or a powerful gust of cool air to keep you refreshed and comfortable. Enjoy complete flexibility with the 360° adjustable fan base. Whether you're seated in the driver's seat, passenger seat, or backseat, you can easily pivot the rear seat fan to direct the airflow precisely where it's needed most. No matter where you sit, this electric cooling fan automotive ensures everyone remains cool and comfortable. Compatible with a USB power interface, this semi truck fan is suitable for use in a wide range of vehicles, including SUVs, RVs, sedans, business cars, off-road vehicles, vans, trucks, and heavy-duty trucks among others. It operates quietly, providing powerful airflow while consuming minimal energy.