Kensington ExpertMouse Wireless Trackball K72359JP [Japanese Package]

Manufacturer's 3 year warranty included Hand-friendly design: Symmetrical design allows for comfortable operation by both right-handed and left-handed users. Scroll ring and 55mm diameter large ball: By turning the scroll ring, you can easily scroll through web pages and documents. The red ball is specially designed with a hard surface and a perfect sphere for precise tracking and control. Diamond Eye Optical Sensor: Motion-sensing technology provides smooth and precise cursor control. You can move to the desired position on the screen without having to move your hands much, improving productivity and work efficiency. Connection method/Bluetooth or 2.4GHz USB Accessories/Receiver, palm rest, Japanese instruction manual Compatible OS: Chrome OS 44, macOS 10.8, macOS 10.9, macOS X 10.10, macOS X 10.11, Windows 7, Windows 8, Windows 8.1, Windows 10