Operation confirmed. ELECOM Wireless Trackball Mouse EX-G, Ultimate Grip, 6 Buttons, Tilt Wheel (Horizontal Scroll), Black, M-XT3DRBK Communication/Connection Interface: 2.4GHz Wireless, USB Additional Product Description: Ergonomic Design, Multi-function Buttons Movement Detection Technology: Optical Number of Buttons: 6 Hand Orientation: Right-handed Compatible Devices: Windows 10, Windows RT8.1, Windows 8.1, Windows 7, Windows Vista, Macintosh OS X 10.10 *Updates to the latest versions of each OS and installation of service packs may be required. *The horizontal scroll function cannot be used on Windows RT8.1. OS: Windows 10, RT8.1, 8.1, 7, Vista, Mac OS X Average Battery Life: 6 months Range: 10 meters Number of Batteries: 1 AAA Battery Hardware Platform: Mac, PC Decoration Features: Logo Adopts a large 2.5mm artificial ruby for the support ball. This thumb-operated wireless trackball features reliable basic performance and unprecedented new functions, achieving evolved pointer tracking. This is an evolved thumb-operated wireless trackball equipped with reliable basic performance and unprecedented new functions. The sensor that detects the movement of the trackball is equipped with a gaming-grade high-performance optical sensor, and the optimization of the new high-performance lens and surrounding optical design achieves outstanding pointer tracking. By adopting a large 2.5mm artificial ruby for the support ball, the operability is improved. In addition, the larger diameter of the support ball makes it less likely to be buried in dirt such as hand grease, reducing the frequency of maintenance. Focusing on the six hand skeletons and muscles that come into contact during operation, and with a design that considers the depressions and bulges, it achieves a new "comfortable feel" that is easy to operate, as if the shape of the palm of your hand is reflected directly.