Logitech M171 Wireless Mouse, 2.4 GHz with USB M...

ensor 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
Battery Details: 1 x AA (included)

Connectivity

Connection Type: 2.4 GHz wireless connection
Wireless range: 10 m
Connect / Power: Yes, on/off switch