ELUTENG USB Silent Cooling Fan 14cm Set of 2 Purchased on Amazon for around 3400 yen. Operation confirmed. - Metal guard, some rust on the USB metal part. - Used in a greenhouse for about a year. - No unusual noise. - One screw missing from the metal guard. - May remove the metal guard during shipping. 【7-Blade & Stable Airflow】7 blades ensure stable airflow. It can quickly cool electronic equipment such as PCs, routers, HDDs, as well as AV equipment and game consoles. Brand: ELUTENG Power Connector Type: USB Voltage: 5 volts Wattage: 1 W Material: Polycarbonate, Metal Manufacturer: ELUTENG Number of Items: 2 Size: 14 x 14 x 2.5cm (with metal guard: 3.5cm) Thank you for viewing.