Hey, it's the ol' wall-hugging mouse! As stated on the box, it "zigs and zags along the wall." Assembly required. Motorized. Pre-assembled electonics. Snap-together assembly. Requires one R6/AA/UM3 battery (not included). Will run for about 6 hours on one battery. Clear blue plastic body measures about 13.5cm long. More like a wall-hugging rat at that size!