Narwal Flow 2

The Flow 2 vacuums and mops with a roller mop continuously refreshed by running water: the mop surface stays clean through the run instead of dragging collected dirt around. Two cameras and a structured-light edge sensor guide navigation. On carpets, floor sensors detect the surface change and the mop lifts by 12 mm to avoid wetting them; a rug can also be set as a no-go zone on the map. The robot climbs thresholds up to 4 cm.

The dock is the most automated among the Narwal robots listed here: it empties the bin by itself, sterilises the mop and hoses with water at 100 °C, dries with hot air at 60 °C and doses the floor cleaning solution on its own. The user manual also gives an inlet water pressure and hose instructions for the dock, meaning the model supports a direct connection to the home's water supply, alongside removable tanks. On board there are a camera and a microphone, listed among the manual's components with no physical shutter or separate disable switch mentioned. Wi-Fi covers only 2.4 GHz, and the control app is simply called Narwal.

The battery charges in about three hours and the robot runs at under 56.5 dB. The manufacturer does not state the runtime in minutes or the navigation type (rotating or solid-state LiDAR). It suits someone who wants the dock to handle the detergent too, and who may consider a fixed plumbing hookup.