ECOVACS has been making window-cleaning robots for years, refining the formula with each generation. The Winbot W2 PRO stands out by adding three spray nozzles that wet the glass before the pad makes contact. That means the robot isn’t just dragging a damp cloth across smudges—it’s actively dissolving grime with a 100% increase in water pressure over previous models. The result is cleaner glass in a single pass, with less streaking.

The W2 PRO uses Win-SLAM 4.0 path planning, which maps the window surface and moves in methodical rows rather than random patterns. It covers the full pane without missing edges, thanks to onboard edge detection that keeps it from tumbling off. A 10-level protection system handles power failures and suction loss, so you don’t have to stand there watching it. The steady-climbing system manages frames and sills without getting stuck.

Battery life is improved by 90% over the previous version, which means you can clean several large windows on a single charge. The app control lets you choose from seven cleaning modes—spot clean a stubborn fingerprint, or run a full grid pattern on a patio door. It’s a specific tool for a specific job, but if you have lots of glass, it saves real time and elbow grease.