Logitech M171 Wireless Mouse

Mouse Dimensions (height x width x depth): 3.89 in (99 mm) x 2.36 in (60 mm) x 1.54 in (39 mm) Mouse Weight (including battery): 2.65 oz (75.2 g) Receiver Dimensions (height x width x depth): 0.57 in (14.4 mm) x 0.74 in (18.7 mm) x 0.24 in (6.1 mm) Receiver Weight: 0.06 oz (1.8 g) Sensor technology: Advanced Optical Tracking Sensor Resolution: 1000 Number of buttons: 3