●Microsoft Trackball Explorer 　Microsoft Trackball 　(Discontinued Model) This trackball has a good reputation and a proven track record since its release. I used it for work for a little over six months, and then stored it in its box. The ball rolls smoothly, and the buttons click well, functioning normally (it worked on Windows 11). There are minor scratches and light scuffs from normal use, but I think it's in good condition for its age. There are scuffs on the outer buttons, dirt on the USB connector, and some rust on the bottom cover screws. (Please check the condition in the images) It's an older model, but it's a popular product, so I hope to sell it to someone who is looking for one. Please refrain from purchasing if you are sensitive to used items. I will wrap it in bubble wrap and ship it in a box. ※There are no instructions or case. Please check the specifications of the mouse body on the manufacturer's website.