Robot Roomba Clean Base (for j series) + dedicated dust box. The items for sale are: Clean Base unit, AC adapter, new paper filter bags, and dedicated dust box. Instruction manual, etc. are missing. This is a dedicated item for the Roomba j series, purchased online in October 2023 as part of a Roomba j7+ (not compatible with i series). This is being sold separately due to a malfunction of the main unit. *This type does not have infrared guidance, so it is not compatible with the i series.* Basically, please refrain from price negotiations. I will delete any questions about price. I will basically lower the price depending on the timing, so please purchase at your desired price. I am also selling on other flea market sites, so if there are simultaneous purchases, the first buyer will be given priority. Thank you for your understanding.