Roomba 780. I was using this until recently, but the battery has deteriorated, so I'm selling it because I bought a replacement. The battery performance of the main unit has significantly degraded, so please purchase it with the understanding that it is a junk item. (I think it can be used if you replace the battery) What I will hand over is everything shown in the photos. I will also include various new accessories. *The Virtual Wall (see photo) has a lot of rust on the battery connection part. I only tried using this when I first bought it and haven't used it since, so I don't know if it works. I have generally cleaned the product, but there is some dust that I couldn't remove because it was used for a long time. Please understand the above points. Due to the item being a junk item, no returns or refunds are accepted. Roomba 780 Roomba 780 iRobot Product Name... Roomba