Thank you for viewing. This is Logitech's top-of-the-line trackball. I used it a few times, but it didn't fit my hand size, so I've been storing it at home. Included: All accessories *USB-C cable was not originally included. Purchased from: Amazon Purchase date: March 13, 2025 Purchase price: 17,800 yen It comes with a two-year warranty. The box has some scratches and marks. The main unit may also have some scratches and minor imperfections. Please purchase only if you understand that this is a used item and the above points. *Returns and refunds are not possible to prevent swapping. - Model name: MX ERGO S - Brand: logicool - Type: Wireless trackball - Compatibility: Windows, macOS, Linux, ChromeOS, iPadOS, Android - Connection method: Bluetooth, logi bolt - Ergonomic design: 20° tilt - Environmental consideration: 20% recycled plastic used - Number of buttons: 5 Connection type... Wireless (Bluetooth)