Features: For G502 Wireless Mouse Roller Conversion Key and Customizable Button provides smooth operating experience and precise control. With wireless technology, no need to worry about cable entanglements; Smooth scroll wheel design for more precise scrolling; Conversion key and programmable button, providing more customised operation option; High sensitivity sensoring, adaptable to different usage scenario. Can be widely used in a variety of scenario, including office, gaming, design, etc., providing a smooth operating experience and precise control. Specifications: Item: Mouse Roller Conversion Key and Customizable Button For G502 Wireless Mouse Package Size: about 10CM/3.94in Component： Plastic Package Includes: 1Set Mouse Roller Conversion Key and Customizable Button note: Due to the problems of lighting effect there will be certain tolerances in the product, please understand. Please allow 1cm errors due to manual measurement.