"A cheap, cordless floor skimmer for small pools; set expectations accordingly."
The '90-minute runtime for 900 sq.ft.' means this can likely make one pass over a typical 24-foot round above-ground pool before needing a multi-hour recharge. It is not intended for larger or in-ground pools.
This product is for the owner of a small, flat-bottom above-ground pool who despises manual vacuuming and wants the absolute cheapest automated alternative for light debris like floating bugs and small leaves. It should be viewed as a convenience tool for a season or two, not a long-term investment.
Anyone with an in-ground pool, a pool with any kind of slope, or a pool that accumulates significant amounts of sand, silt, or algae should skip this. Its power will be insufficient for anything but the lightest cleaning duty. Users expecting a 'set and forget' deep clean will be disappointed.