I am selling two Kensington trackballs that I haven't used recently. ① Orbit Trackball with Scroll Ring Wired 2-button trackball. The ring surrounding the trackball is convenient for scrolling on websites, etc. ② Orbit Wireless Mobile Trackball Receiver-type rechargeable wireless 2-button trackball. This one allows scrolling by tracing the sensor around the trackball. This is a set of the two trackballs above. I have checked their operation and confirmed that there are no problems, but as they are used items, please understand that they are sold as-is, with no returns or exchanges. I will not respond to price negotiations or requests for exclusive sales. I will adjust the price as appropriate, so if the price matches your budget, I would appreciate it if you would purchase them.