Logitech M240 Silent Bluetooth Mouse (Black) [910-007122]

Mouse
Height: 99 mm
Width: 60 mm
Depth: 39 mm
Weight (with batteries): 73.8 g

Technical Specifications
SilentTouch Technology
90% noise reduced Left/Right-click, Middle click 1Left click dBA level measured by independent lab at 1m. Compared with Logitech M185.

Sensor Technology
Smooth optical tracking
Nominal value: DPI range
DPI range: 400-4000, Steps of 100 DPI

Buttons
Number of Buttons: 3 (Left/Right-click, Middle click)

Scrolling
Line-by-line scrolling
Scroll Wheel: Yes, 2D, optical

Battery life
Battery life: 18 months 2Battery life may vary based on user and computing conditions.
Battery Details: 1 x AA (included)

Connectivity
Connection Type: Bluetooth Low Energy Technology
Wireless range: 10 meters 3Wireless range may vary based on user, environmental and computing conditions.
Connect / Power: Yes, on/off switch