If there were a prize for the World's smallest mouse, it would be snapped up by Z-Nano for sure. The meekly mice measures only 42mm (1.65″) x 21mm (0.83″) x 17.65mm (0.69″). Probably the USB cable it comes with would be bigger. You would expect the mouse to be a bit tardy with no frills for storage; well it surprises you with the magnetic clip that secures the cable around the mouse for easy keep. The cutest feature on the muse is the slot for keeping your picture. This way everyone will know that the $60 mouse belongs to you!