Ergonomic design Bluetooth trackball with 5 buttons, compatible with Windows 10. - Brand: ELECOM - Retail Price: ¥14,531 - Color: Black - Connectivity: Bluetooth - Number of Buttons: 5 - Trackball: Yes - Features: Ergonomic design - Supported OS: Windows 10 & 11 - Bluetooth Version: 4.0 - Condition: Almost unused, so it's very clean. Includes a separate, recommended Bluetooth adapter (LBT-UAN05C2). (Retail price is approximately ¥1000)