Dimensions mouse height: 3.90 in (99 mm) width: 2.36 in (60 mm) depth: 1.54 in (39 mm) weight (with batteries): 2.65 oz (75.2 g) usb receiver height: 0.57 in (14.4 mm) width: 0.74 in (18.7 mm) depth: 0.24 in (6.1 mm) weight: 0.06 oz (1.8 g) system requirements usb receiver required: available usb port windows 7, 8, 10 or later macos 10.5 or later chrome os linux kernel 2.6+ technical specifications sensor technology smooth optical tracking dpi (min/max): 1000± buttons number of buttons: 3 (left/right-click, middle click) scrolling line-by-line scrolling scroll wheel: yes, 2d, optical battery life battery life: 12 months 6battery life may vary based on user and computing battery details: 1 x aa (included) connectivity connection type: 2.4 ghz wireless connection wireless range: 32.81 ft (10 m) connect / power: yes, on/off