23% cheaper ≈ US$540
- Window area per session 90 m² vs 75 m²
- Water tank (robot) 80 ml vs 120 ml
- Noise level 68 dB vs 66 dB
10 window-cleaning robots at a similar price that compete with the Winbot W2S Pro Omni Care — what each does better, what it gives up and how the price compares.