LOGITECH M331 SILENT PLUS WIRELESS MOUSE DPI Extra comfort and precision with Silent Touch. FEATURES Available Colors: Black, Blue, Red Silent Touch Technology Left/Right-click, Middle click, Scrolling, and Gliding have been noise-reduced 1Sound level comparison between Logitech M330 and Logitech M170. Left click d BA 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 mac OS 2Available on Windows and mac OS 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 SPECIFICATIONS Height: 105.4 mm Width: 67.9 mm Depth: 38.4 mm Weight (with batteries): 91 g PACKAGE CONTENTS 1 x Logitech M331 Silent Plus Wireless Mouse Dpi.