Day-long comfort, great for small to medium-sized hands. Raise your hand into comfort. Realign into a more natural posture. And relax into focus, all day long with Lift Vertical Ergonomic Mouse — a great fit for small to medium hands, with a left-handed option available too. **New in box** I opened it and never used it. (I will update the listing with actual pictures tomorrow) Dimensions Height: 4.25 in (108 mm) Width: 2.7 in (70 mm) Depth: 2.8 in (71 mm) Weight: 4.4 oz (125 g) Technical Specifications Sensor Technology Sensor Type: Logitech Advanced Optical Tracking DPI range: 400-4000 dpi (Fully adjustable with 100DPI increments) Nominal value: 1000 DPI Buttons Number of Buttons: 6 (Left/Right-click, Back/Forward, Middle button, Scroll-wheel with middle click) Customization app Supported by Logi Options+ on Windows and macOS 1Available on Windows and macOS at logitech.com/optionsplus Battery Battery type: 1x AA battery (included) Battery life: up to 24-months 2Battery life may vary based on user and computing conditions. Connection type support Logi Bolt USB receiver (included) Bluetooth® Low Energy Technology Wireless range 32.8 ft (10-m) wireless range 3Wireless range may vary depending on the operating environment and computer setup.