Defective: The main unit's power switch is stiff and doesn't move from the state shown in photo 2. The screen turns off in energy-saving mode after a while, so I always left the power on. One of the rubber feet on the bottom has come off, and a replacement is attached. I've used it almost exclusively indoors, but it has some scratches due to its age. I've reset it to factory settings and confirmed its operation for this listing.