Logitech Wireless Mouse M170

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 Battery: 12 Months 5Battery 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 M 6Wireless Range May Vary Based On User, Environmental And Computing Conditions. Connect / Power: Yes, On/Off Switch