See question above. Can one sit during Shabbat on a electric vibrator and massage chair when it is disconnected? One can see the controls on the side of the chair, is it permitted?

Horav Shlomo Miller’s Shlit’a opinion is that as opposed to the walker, usually this is closer to watch and very often it is used when not on, so it is permitted. It is similar to analogous beds that seniors or hospitals use and should be disconnected during Shabbos