This is a vertical trackball mouse with a list price of 9,980 yen. Purchased in April 2025, it has been stored unused and unopened. The body has a 62° slope, ergonomically designed to allow for a natural wrist angle. Since you don't need to move the mouse body, it helps reduce wrist fatigue. It can connect to one USB receiver and two Bluetooth devices, and can connect to three devices simultaneously with the multi-point function. You can quickly switch between devices with the button on the back. By pressing the switch button, you can switch between multiple devices and monitors. It is compatible with Windows, Android, iOS such as iPhone and iPad, and Mac OS. It is a Type-C USB rechargeable device that does not require batteries. Charging for about 2 to 3.5 hours with the included charging cable allows for approximately 120 hours of continuous use. DPI can be adjusted in 5 steps: 200 → 400 → 800 → 1200 → 1600. Since there is no need to move the mouse body on the desk, it saves space and allows for work. Therefore, smooth mouse operation is possible even during travel, such as on airplanes and bullet trains.