Logitech M557 Bluetooth + Wireless Mouse

Dimensions
Mouse
Height: 3.94 in (100 mm)
Width: 2.28 in (58 mm)
Depth: 7.87 in (200 mm)
Weight (with batteries): 3.77 oz (107 g)
Technical Specifications
Sensor Technology
Smooth optical tracking
DPI (Min/Max): 1000±
Buttons
Number of Buttons: 6 (4 of them programmable)
Scrolling
Precision scrolling wheel
Tilt Wheel: Yes
Battery
Battery: 12 months 1Battery life may vary based on user and computing
Battery Details: 2 x AA (included)
Connectivity
Connection Type: Bluetooth
Wireless range: 33 ft (10 m) 2Wireless range may vary based on user, environmental and computing conditions.