Logitech Original M170 Wireless Mouse

Mini USB receiver(18x15x6 mm) receiver Plug & Play
Dimensions
Mouse
Height: 3.85 in (97.7 mm)
Width: 2.42 in (61.5 mm)
Depth: 1.39 in (35.2 mm)
Weight (with batteries): 2.49 oz (70.5 g)
USB Receiver
Height: 0.91 in (23.1 mm)
Width: 0.74 in (18.7 mm)
Depth: 0.26 in (6.6 mm)
Weight: 0.06 oz (1.8 g)
Technical Specifications
Sensor Technology
Smooth optical tracking
DPI (Min/Max): 1000±
Buttons
Number of Buttons: 3 (Left/Right-click, Middle click)