Features: Comfortable rotating button, stepless speed regulation, comfortable knob, easy to rotate and effortless. High-quality flame-retardant PC material, high temperature resistance, easy to clean and not deformed. Simple, stylish, versatile, suitable for a variety of decoration styles. The cold-pressed steel frame structure is more closely aligned with the panel, and the installation is convenient and it is not easy to be damaged or deformed. Specifications: Material: Plastic Weight: 90g Size: 8.6x9cm/3.39x3.54inch Color: Black/Gold/Gray/White Load Power: 300W Rated Voltage: 50HZ/220V Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Speed Adjuster Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.