Yes but it can be buried
Do you have to have a perimiter wire permanently lying around the border of your lawn to use one of these?
I get about 50k steps doing mine. Those petrol vibrations do wonders for you step count
They mulch the clippings….but because they only take off a mm or so every day (or night) then you won’t (shouldn’t) notice
They don't store or collect, the cut little and often