I have one too from Husqvarna its brilliant. No noise and no work.Rain, meh....
Changed guitar strings last night, coastal humidity wreaks havoc on phosphor bronze strings
When I had grass in central Oregon I used the iMow from Stihl, completely autonomous and made the grass look like a golf course. had its own docking station and mowed on its own schedule at a random pattern to not leave any lines. Not cheap, but was nice to not have to physically mow and looked better than what I could do