Logitech MX Ergo S Elevated comfort and precision MX Ergo S, Logitech’s most advanced wireless ergonomic trackball yet, with a 20-degree tilt angle and 6 customizable buttons - now with quiet clicks and quick USB-C charging (cable not included). Specs and Compatibility Dimensions Height: 132.5 mm Width: 99.8 mm Depth: 51.4 mm Weight (without metal plate/without receiver): 164 g Weight (with metal plate/without receiver): 259 g Technical Specifications Sensor Technology - Logitech Advanced Optical Tracking - Minimal and maximal value: 512-2048 dpi Buttons - Number of Buttons: 8 (Left/Right-click, Back/Forward, Scroll-wheel with Right/Left-tilt and Middle-click, Precision Mode, Easy-switch) - Number of customizable buttons: 6 Customization app - Supported by Logi Options+ on Windows and macOS - Requires Logi Options+ app, available for recent versions of Windows and macOS at logi.com/optionsplus. Battery type - Rechargeable with USB-C charging - Battery life: Up to 120 days on a single full charge; 1-min charge for 24-hour of use ? - Cable not included, USB-C cable available on logi.com for purchase Connection Type - Logi Bolt USB Receiver - Bluetooth Low Energy Technology Wireless range 10-m (33-ft) wireless range