I’ve seen the Echo in pool stores. They are sister models. It’s just a very basic cleaner with a single power on button remote, no programmability whatsoever. It has a single active scrubbing brush and no PowerThrust directional technology - it changes direction by climbing the wall and then coming back down. It has a top-loading basket like the S series but just coarse screen panels, no fine filters. If one has an uncomplicated pool with not a lot of debris, then it’s a good low-cost alternative to pump driven cleaners.