【New, Unopened】Logicool Logitech MX ERGO Wireless Trackball Mouse (MXTB1s) This high-performance model features both Unifying and Bluetooth compatibility, and has 8 buttons. Compatible with Windows/Mac/iPad OS, it has a fast-charging built-in battery for long hours of use. With stable operation and comfortable ergonomic design, it's also ideal for long work sessions. Domestic genuine product, with warranty (in the same condition as when purchased, as it is unopened). Instant purchase welcome. Will be carefully packaged and shipped.