Narwal Flow

It auto-empties into a 2.5 L bag and refills the robot's water on its own, though the mop wash tray needs occasional manual wiping.

It clears obstacles up to 40 mm, so it handles most door sills and transition strips between rooms.

It washes the mop with 176°F hot water rather than auto-dispensing detergent, so you add cleaning solution yourself if you want it.

Yes. It supports no-go zones and stores maps for up to 4 levels, so you can fence off rooms on any floor.