Thank you for viewing! This is a set of the Logitech high-performance wireless trackball mouse "MX ERGO S" and a brand new, unused "Logi Bolt USB receiver." 【Product Condition & Features】 I purchased this in late June 2025 for remote work to reduce wrist strain, drawn to the comfortable operation of a trackball. Unfortunately, I was unable to get used to it. ・The mouse body was used for only 【2 hours immediately after purchase】. ・The separately sold Logi Bolt receiver is 【completely unused and unopened】. I immediately returned it to its original box and stored it carefully, so as the photos show, there are no scratches, shine, or signs of use on the main body, and it is in a very clean, like-new condition. ・The wrist angle can be adjusted to 0° and 20°, allowing for operation in a natural posture. ・Compatible with the latest "Logi Bolt" connection, providing a stable wireless environment. ・Equipped with the convenient "FLOW" function, which allows seamless operation of two PCs. 【Included Items】 ・MX ERGO S mouse body (Model number: MXTB2d) ・Logi Bolt USB receiver (Model number: LBUSB1) ・All original accessories are included, such as the original box, metal plate for angle adjustment, and charging cable. (Everything in the first photo is included) 【Reason for Listing】 As mentioned above, I couldn't get used to it, but I think the product itself is excellent. I purchased it for a total of 19,000 yen (mouse: 17,800 yen + receiver: 1,200 yen), so I think it's a great deal. I hope those who wanted to try a trackball or those who are suffering from wrist fatigue from long hours of PC work will use it. 【Other】 ・I have re-confirmed the operation before listing. ・I will carefully clean the entire item with alcohol and pack it in the original box for shipping. If you have any questions, please feel free to comment. Thank you. #Logicool #Logitech #MXERGO #MXERGOS #LogiBolt #Trackball #Mouse #Ergonomics #RemoteWork #Telework