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I just bought this product and sent it out to its run. It didn't work as my previous vacuum robot does. It falls off steps 100% of the time, doesn't return home station and gets stuck on small steps. It is far beyond below my expectation and mine is not high at all: given my previous one cost at least 20% lower. It is a real disappointment and I'll try to return it.
Great buy. It does its job well, going around our busy apartment floor (we have 2 children, so toys are everywhere) and collection all the dust. Although it does it in a rather random fashion. Some minor issues with docking, at times it will go back and forth at the dock or simply freeze few inches back. Also, it bumps into anything that’s black.