Mouse Dimensions (height x width x depth): 49.4 mm (1.94 in) x 81.9 mm (3.22 in) x 31.8 mm (1.25 in) Mouse Weight (including battery): 51.9 g (1.83 oz) Receiver Dimensions (height x width x depth): 14.4 mm (0.57 in) x 18.7 mm (0.74 in) x 6.1 mm (0.24 in) Receiver Weight: 1.8 g (0.06 oz) Sensor technology: Advanced Optical Tracking Sensor Resolution: 1000