Ecovacs Winbot 880 · Ecovacs Winbot W2S Pro Omni

Corded power removes any runtime limit but ties the robot to an outlet: Ecovacs publishes no cable length for this model, so verify reach before planning a run across several panes.

The station battery removes the outlet hunt, but the robot still has to be carried and pressed onto every pane.

Edge scrubbing is the headline change, and no independent test has yet measured whether it reaches the frame.

Exterior panes you cannot reach to place and retrieve the unit

The robot is placed on the glass by hand and taken off by hand, and the safety pod has to be pressed onto a clean surface within tether reach before the run starts. Any pane where that cannot be done from stable footing is out of scope regardless of what the robot itself can hold onto.

Framed windows with very narrow frames

Ecovacs states the WINBOT is not to be used on a framed window whose frame is narrower than 3 mm (0.1 in). Frameless glass, mirrors and balustrades are covered by this model's edge detection; the thin-framed window is the case that is excluded.

Set-and-forget operation owners

The robot plans its own path across a pane and returns to its starting point when it finishes, but it does not move between windows. An owner places it, waits, retrieves it and repeats. There is no scheduling, no app and no unattended operation.

Windows with narrow frames or thin glass

The manual rules out framed glass with a frame under 5 mm, glass thinner than 3 mm and mirrors thinner than 4 mm.

Buyers who want independent cleaning results first

Coverage so far is launch news and a Japanese launch-event demo; no published test measures streaks, edge results or coverage on this model.

Greasy kitchen glass or stickered panes

The manual says not to use it on greasy windows or on glass carrying static-cling stickers, which can cause a fall.

Exterior cleaning in wind or rain

The manual prohibits use in rain and in gale-force winds, and requires the safety rope to be tethered for any exterior window.