Features: Introducing the USB 110mm Rainproof Exhaust Fan, for efficient ventilation with a powerful 4000RPM motor and USB input, perfect for enhancing airflows in various space. This exhaust fan features robusts waterproof design, ensuring durability and high performances with its metal motor, while offering large airflows capacity. Suitable for homeowners and office managers seeking reliable ventilation, this fan caters to those who prioritize easy installation and convenience. Perfect for use in bathrooms, toilets, warehouses, and other enclosed areas, this fan effectively improves air circulation and maintains a freshing environment. With its compactly size and universal application, the USB Exhaust Fan is essential addition to any space requiring efficient ventilation without the need for complex installations. Specifications: Component:Plastic Size:Approx.8.5x11x19.50cm/3.35x4.33x7.68inch Circular Tube Inner Diameter:110mm/4.33inch Input:USB5V-6V Speed:4000rpm Package Includes: 1pc USB Exhaust Fan note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.