25% cheaper ≈ US$390
- Suction power 6,000 Pa vs 3,300 Pa
- Water tank (robot) 120 ml vs 80 ml
- Noise level 62 dB vs 68 dB
10 window-cleaning robots at a similar price that compete with the Winbot W3 Omni — what each does better, what it gives up and how the price compares.