Logitech M331 SILENT PLUS Wireless Mouse BLUE Extra comfort and precision with SilentTouch Dimensions Mouse Height_ 105.4 mm Width_ 67.9 mm Depth_ 38.4 mm Weight (with batteries): 91 g Technical Specifications SilentTouch Technology Left/Right-click, Middle click, Scrolling and Gliding have been noise reduced 1Sound level comparison between Logitech M330 and Logitech M170. Left click dBA measured by an independent lab at 1m. Sensor Technology High Precision Optical Tracking DPI (Min/Max): 1000± Buttons Number of Buttons_ 3 (Left/Right-click, Middle click) Customization app Supported by Logi Options+ on Windows and macOS 2Available on Windows and macOS at logitech.com/optionsplus Scrolling Line-by-line scrolling Scroll Wheel_ Yes, Rubber, 2D , mechanical Battery Battery_ 18 months 3Battery life may vary based on user and computing Battery Details_ 1 x AA (included) Connectivity Connection Type_ 2.4 GHz wireless connection Wireless range_ 10 meters 4Wireless range may vary based on user, environmental and computing conditions. Unifying-ready mouse_ Yes Unifying-ready receiver_ No Sustainability Product carbon footprint_ 3.97 kg CO2e Certified carbon neutral Warranty Information 1-Year Limited Hardware Warranty