LOGITECH M220 SILENT WIRELESS MOUSE | 910-004878

SilentTouch Technology
90% noise reduced Left/Right-click, Middle click ?

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, mechanical

Battery
Battery: 18 months
Battery Details: 1 x AA (included)

Connectivity
Connection Type: 2.4 GHz USB wireless connection
Wireless range: 33 ft (10 m)
Connect / Power: Yes, on/off switch