Gakken Mini Robotic Vacuum Cleaner Kit (Gakken Otonano Kagaku, Vol. 33) (Gakken Otonano Kagaku, Vol. 28) (japan import)

Desktop vacuum cleaner large enough to grab by hand. It is a mechanical vacuum cleaner that does not have a control mechanism sensors and electrical. This is done mechanically by using a gear change of direction change of direction if Butsukare in [Features] - obstacle, even if you sense the edge of the table further, all of them.