This cleaning gadget is an automatic mop that rolls around the room to clean the floor from dust. It features an internal timer to roll around every 15 minutes and stops after about 3 hours, when the battery need to be replaced.
To clean the ball you have to take the mop material off and wash it. It also comes with a cleaning brush and is made from polyester. You can find Mocoro in pink, orange and green at JapanTrendShop, at $70.