Roborock Saros 20 vs Roborock Saros 20 Flow

The Roborock Saros 20, on connectivity and on the figures it publishes. It supports both Wi-Fi bands and documents its tank and bin sizes, while the Roborock Saros 20 Flow is 2.4 GHz only and leaves those unpublished, though it offers a slightly smaller dock and a longer run of up to 301 minutes against 200.

Connectivity and documentation. The Roborock Saros 20 supports 2.4 GHz and 5 GHz Wi-Fi, while the Roborock Saros 20 Flow supports 2.4 GHz only. Both are rated at 36,000 Pa, so suction does not separate them.

On the specs they share, yes. Both are rated at 36,000 Pa with LiDAR navigation, obstacle avoidance, multi-room maps and no-go zones, and both docks empty, wash, dry and dose detergent with the mop lifting on carpet.

The Roborock Saros 20. It is 79.8 mm tall against 89.8 mm for the Roborock Saros 20 Flow, so it fits under low sofas and beds that the taller model cannot enter.

Buyers who want dual-band Wi-Fi, documented tank and bin figures, and a slightly lower body that clears more low furniture, while keeping the same suction and self-maintenance as the Flow.

Buyers who want the longer run of up to 301 minutes and the slightly smaller and lighter dock of the pair, and do not need 5 GHz Wi-Fi or published capacity numbers, and whose furniture sits high enough for an 89.8 mm robot.