Logitech Mx Ergo Wireless Trackball Mouse Graphite

Battery Life Up to 4 months on a full charge; 1 minute of charging gives a full day of use Technical Specifications Sensor technology Logitech Advanced Optical Tracking Nominal value: 380 dpi 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 ? Battery Rechargeable Li-Po (500 mAh) battery Battery life: Up to 4 months on a single full charge ? Wireless technology Unifying USB Receiver Bluetooth Low Energy (BLE): 4.1 Wireless operating distance: 33 ft (10 m) ?