iRobot Roomba 693 Robot Vacuum Cleaner Body I received this about three years ago. I opened the manual intending to use it, but the setup seemed troublesome, so I stored it in a dark place. *The manual has a tear (near the bottom center of the cover. It was peeled off by tape when opened. There is no problem with reading it.) The main unit is unopened, so I haven't checked its operation. Although it is an unopened product, it is several years old, and as it is an electrical appliance, returns due to defects after the product arrives are not accepted, including for the purpose of preventing product substitution. Returns are also not accepted for damage or defects caused by shipping. I have no knowledge of the product, so I cannot answer questions about the device. If you have any concerns, I can provide photos. Please purchase with your understanding of everything.