Logitech M240 SILENT Off-White Bluetooth Mouse Reliable Bluetooth® mouse with comfortable shape and silent clicking Dimensions Mouse Height: 99 mm Width: 60 mm Depth: 39 mm Weight (with batteries): 73.8 g Technical Specifications SilentTouch Technology 90% noise reduced Left/Right-click, Middle click 1Left click dBA level measured by independent lab at 1m. Compared with Logitech M185. Sensor Technology Smooth optical tracking Nominal value: DPI range DPI range: 400-4000, Steps of 100 DPI Buttons Number of Buttons: 3 (Left/Right-click, Middle click) Scrolling Line-by-line scrolling Scroll Wheel: Yes, 2D, optical Battery life Battery life: 18 months 2Battery life may vary based on user and computing conditions. Battery Details: 1 x AA (included) Connectivity Connection Type: Bluetooth Low Energy Technology Wireless range: 10 meters 3Wireless range may vary based on user, environmental and computing conditions. Connect / Power: Yes, on/off switch Optional software Supported by Logi Options+ on macOS 11 or later and Window 10, 11 or later Sustainability Off white plastics: 37% post-consumer recycled material 4Excludes printed wiring assembly (PWA) plastics, and packaging. Graphite plastics: 48% post-consumer recycled material 5Excludes printed wiring assembly (PWA) plastics, and packaging. Rose plastics: 37% post-consumer recycled material 6Excludes printed wiring assembly (PWA) plastics, and packaging. Certified carbon neutral Warranty Information 1-Year Limited Hardware Warranty