Ecovacs has a new window-cleaning robot called the Winbot W2S Pro Omni, bringing some of the better features of the Winbot W3 Omni down to its midrange squeegie bot. That includes battery power, faster cleaning, and higher suction to keep it from tumbling off your window as it works.

The W2S Pro Omni looks a lot like its predecessor, the W2S Omni. It’s a two-part machine: the square-shaped bot with a handle on one side and cleaning pads and tank-style treads on the other, with bump sensors on the outside to tell it when it’s hit the edge of your window. That’s tethered to a base station that you can either hang the robot on the back of when it’s not in use or insert into to clean its pad. Inside the base station are four scrubbersâup from two in the W2S and matching the number found in the base station of the W3 Omni I reviewed a few months backâthat automatically clean the pad between uses.

Ecovacs says the W2S Pro Omni can clean about a square meter of window area in 1 minute and 30 seconds, and that it can run for around 130 minutes on a full charge. (The inclusion of a battery is new for its midrange models; the older W2S Omni’s base station must be within reach of a power outlet to run.) That’s the same amount of time the company quotes for its pricier W3 Omni, which I reviewed earlier this year. The W2S Pro Omni also has the same 10,000Pa suction power of its fancier sibling, a 2,000Pa improvement over the vanilla W2S Omni.

Other improvements to the Pro Omni include upgraded edge-cleaning and felt pads for slightly lifting the robot so that it’s not just pushing dirt to the edges. Ecovacs also says it can detect all window edges, whereas the old one would only notice edges that protrude down to 2mm. That includes frameless, free-standing glass. (I saw that in action with the W3 Omni at CES 2026 before I got a chance to review it, and indeed, it stopped when it got to the edge of the glass and went another way.)

As I wrote in my review of the W3 Omni, which this sounds like a slightly downgraded version of, window cleaning robots like this can be a great helper if you have lots of large windows, particularly hard-to-reach ones. The W3 Omni wasn’t perfect, though; it had a bit of trouble with the tapered framing of some of my windows. It would slide up the taper and then stop, alerting me it had started to lose suction and was in danger of falling, and it didn’t always leave my windows with a streak-free shine. Also, although it’s equipped with what sounds like the same auto-lifting feature as the new W2S Pro Omni, it still managed to sometimes leave little lines of crud that it had pushed to the edge. And I wouldn’t bother with it if you don’t have a bunch of great big windows to tackle; it’s just not worth all the wrangling to move it from one pane to the next every few minutes. Still, it did a more than passable job cleaning, and it’s fun to watch it work. I’d imagine a lot of that is true about the W2S Pro Omni, as well.

The Winbot W2S Pro Omni is priced at $600 and is available now on Ecovacs’ website.