13% cheaper ≈ US$130
- Runtime 160 min vs 120 min
- Height 94 mm vs 98 mm
- Water tank (robot) 320 ml vs 270 ml
- Dustbin (robot) 280 ml vs 400 ml
10 robot vacuum and mop combos at a similar price that compete with the Robot Vacuum S20 — what each does better, what it gives up and how the price compares.