[Car Vent Fan with Hook Mount] This car vent fan features a reinforced reverse-hook vent mount with a triangular support structure. The twist-lock hook design firmly secures the fan in place, preventing it from falling during bumps or sudden stops—helping maintain driving safety and reducing distractions on the road. [3-Speed Powerful Cooling] Built with a high-speed brushless motor up to 4500RPM, this portable fan for car delivers strong airflow to accelerate air circulation inside your vehicle. With 3 adjustable speed settings, you can easily customize airflow intensity to match different cooling needs. When used with your car’s AC, it helps distribute cold air faster and more evenly—perfect for hot days, weak AC performance, or long road trips with family. [USB Powered & Battery-Free] This usb fan for car contains no built-in battery, making it safe to leave in your vehicle even during hot summer days. USB powered (5V/1A or higher), this usb car fan works with car chargers, adapters, laptops, and power banks. The 47.24" USB cable supports both front and rear air vent installation. Compatible with SUVs, RVs, sedans, vans, and trucks with vertical or horizontal vents(up to 0.16" thick and 1.06" wide) not compatible with round or specially shaped vents—please verify before purchasing. [360° Adjustable for Flexible Cooling] The 360° adjustable fan head allows flexible airflow direction, helping improve air circulation throughout the vehicle. This portable car fan works best when used with your car’s AC system to distribute cooling air more efficiently. Install this fan for car on front or rear air vents to deliver refreshing airflow to drivers, passengers, kids, or pets—keeping every seat comfortable during daily commutes or long road trips. [Ultra-Quiet Brushless Motor] Built with a high-speed brushless motor, this portable fan for car offers powerful airflow with an ultra-low noise level down to just 28dB. Whisper-quiet operation won’t disturb sleeping babies, kids, or pets, making it ideal for family road trips and daily commutes. Working Principle (Important Note): This car fan improves comfort by circulating and strengthening airflow, not by generating cold air like an air conditioner. When your car AC is on, it helps deliver stronger cooling. If your vehicle has no AC, the fan will circulate ambient air based on surrounding temperature. 1. The product features an integrated hook bracket with a triangular design for stability. The knob-style hook locks securely, preventing dislodgement during travel and ensuring driving safety. 2. Three-speed adjustment with larger blades delivers greater airflow and stronger airflow. The convenient wired remote control enhances safety. 3. Brushless motor ensures quiet operation at high speeds, providing powerful airflow and extended service life. Exceptionally quiet operation, with noise levels as low as 28dB, making it ideal for households with children or pets in the vehicle; 4. Installation is remarkably straightforward. As it contains no internal batteries, it remains perfectly safe in vehicles during hot summer weather. Powered via USB, it is compatible with 5V/1A or higher USB power sources, including car chargers, adaptors, laptops, and power banks. The USB cable measures 47.24 inches (120 cm), compatible with various vertical/horizontal air vents. It functions effectively in both front and rear vents, providing cooling for rear passengers and pets in SUVs, motorhomes, saloons, vans, and trucks. 5. Universal head adjustment – 360° rotatable for customisable airflow direction; 6. Powerful airflow with a rotational speed of up to 4500 RPM. Despite its compact size, it achieves optimal performance when used in conjunction with the vehicle's air conditioning system, facilitating the circulation of cool air.