【New, Unopened】Logicool MX ERGO Wireless Trackball Mouse (MXTB1s) by Logitech 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-lasting use. With stable operation and a comfortable ergonomic design, it's perfect for long hours of work. Domestic genuine product, with warranty (in the same condition as purchased, as it is unopened). Instant purchase welcome. Will be carefully packaged and shipped.