Features: Intelligent Hot Air Circulation,Utilizes advanced hot air circulation technology to significantly improve heat dissipation efficiency. Quiet Design , Fan noise is as low 20 decibels, providing a quiet working environment. Say goodbye to noisy fans and focus on the task at hand. Perfect for quiet work or late-night use. hardwearing Plastic, Selected plastic ensures lightweight and durability. Magnetic fan heating and hot air circulation accelerate intelligent heat dissipation , energy saving. Specifications: Component: Plastic Size: 300x69x30mm Properties: White fan 1 / Fan 2 / Fan 3 Two different power buttons are best for you. Specific parameters need to see the picture Operating power: 1 watt Average noise: <20 decibels Technical parameters: adopt hot air circulation acceleration technology, low noise design, strong compatibility, suitable for a variety of heating fans Package Includes: 1 radiator fan with adjustable magnet 1 x 5V2AUSB adapter (EU) note: The two models have different power and draft rates. Choose according to your needs for different cooling effects. Please allow for 1-3cm differences in manual measurement.