Forget about distracting clicking sounds. M221 reduces over 90% Sound level comparison between Logitech M221 and Logitech M170. Left click dBA measured by an independent lab at 1m. of noise, creating a quieter and more productive environment for you and those around you. The small size and smooth cursor control make it great for tight workspaces and busy desks.
Height: 99 mm Width: 60 mm Depth: 39 mm Weight (with batteries): 75.2 g
Battery
Battery: 18 months, Battery life may vary based on user and computing Battery Details: 1 x AA
Features
Connection Type: 2.4 GHz USB wireless connection Wireless range: 10 meters, Wireless range may vary based on user, environmental and computing conditions, Connect / Power: Yes, on/off switch
