"An extremely cheap, unintelligent robot for sweeping hard floors and almost nothing else."
'120 Mins Runtime' is a theoretical maximum achieved on a low power setting on a simple, flat surface. Real-world runtime navigating furniture and varied surfaces will be notably shorter before it needs to recharge.
This is for someone with a small, simple apartment comprised entirely of hard floors. If your only problem is light surface dust and pet hair, and you want an automated sweeper for under $100, this fits that narrow profile.
Anyone with carpets, area rugs, or a floor plan larger than a small studio should avoid this. Its random navigation is inefficient, and the lack of a brush roll means it cannot truly clean fabric surfaces.