Narwal's roller mop keeps a continuously rinsed surface against your floors, which suits homes where sticky kitchen messes and daily hard-floor upkeep dominate. Roborock's Saros 20 counters with dual spinning mop pads at 200 RPM, higher 36,000 Pa suction, an extendable side brush, and pads that automatically lift and detach before carpet. Pick the Flow 2 for straightforward mopping and a longer warranty, or the Saros 20 for stronger vacuuming and more hands-off automation.
Two very different mopping philosophies are on the table here. Narwal built the Flow 2 around a roller mop, the newest approach in the category, where a continuously rinsed roller passes over the floor instead of dragging pads across it. Roborock went with dual spinning mop pads on the Saros 20, spinning at 200 RPM with 13 N of downward pressure and the ability to detach themselves before the robot touches carpet. Both use LiDAR plus a camera and 3D structured light for obstacle avoidance, both empty themselves, and both wash and dry their own mops. The differences show up in the details.
Narwal Flow 2
out of 10Roborock Saros 20
These two finish close overall, 8.45 for the Flow 2 versus 8.31 for the Saros 20, so this comes down to what you value. Navigation is where the Flow 2 pulls ahead, 8.44 against 6.11, helped by its dual HD camera setup. The Saros 20 takes cleaning, 7.34 versus 6.72, and features, 8.38 versus 6.20, thanks to extras like the extendable side brush, self-detaching mop pads, and off-peak charging. Neither is overpriced for what it delivers.
Start with the mops. The Flow 2 uses a roller system running at 80 RPM with 12 N of pressure and a larger onboard water tank, so it keeps laying down fresh water as it goes. The Saros 20 uses dual spinning pads at 200 RPM with 13 N of pressure, and those pads lift 20 mm or detach entirely when carpet shows up. On vacuuming, Roborock brings 36,000 Pa against Narwal's 30,000 Pa, plus a combo bristle and rubber brush and a side brush that extends into corners. Roborock's dock washes mop pads at 212 degrees Fahrenheit compared to Narwal's 140. Narwal answers with a bigger 7,000 mAh battery and a two-year warranty against Roborock's one.
Roborock takes this one on hardware: 36,000 Pa versus 30,000 Pa, a combo bristle and rubber main brush, and a side brush that extends outward to sweep along baseboards and into corners. The Flow 2's single rubber and bristle brush is capable, but it stays fixed and pulls less air.
This is the interesting matchup. Narwal's roller mop constantly rinses itself mid-clean and carries more water onboard, so it handles long hard-floor runs without stopping, but Roborock's dual spinning pads scrub harder at 200 RPM with slightly more pressure, and they wash at a hot 212 degrees Fahrenheit back at the dock.
For homes with a shedding dog, Roborock's extra suction (36,000 Pa versus 30,000 Pa) and slightly larger 2.7 L dust bag give it the nod. The Flow 2's 2.5 L bag is close enough that emptying frequency will feel similar.
Both run LiDAR alongside AI, camera, and 3D structured light obstacle avoidance, so the fundamentals match. Roborock clears taller thresholds at 88 mm versus 40 mm and stores up to 4 floor maps, though Narwal's dual HD cameras give it strong obstacle recognition in cluttered rooms.
Roborock's dock holds 4 L of clean water and 3.5 L of dirty water and washes pads at 212 degrees Fahrenheit, which cuts through greasy residue better. Narwal washes at 140 degrees but dries at a warmer 140 degrees compared to Roborock's 131, which helps keep mop odor down.
Narwal packs the larger cell at 7,000 mAh versus 6,400 mAh, useful on big open floor plans. Roborock counters with off-peak charging, so the dock tops up when electricity rates are lower.
Dead even here. Both support built-in voice control plus Amazon, Google, and Apple, and both handle no-go zones, multi-level maps, smart carpet cleaning, and smart obstacle avoidance.
| Feature | Narwal Flow 2 | Roborock Saros 20 |
|---|---|---|
| Main Brush Type | Single (rubber & bristle) | Combo (bristle & rubber) |
| Mop Type | Roller | Dual spinning mop pads |
| Extendable Side Brush | No | Yes |
| Mop Moisture Levels | Adjustable | 30 |
| Mop RPM | 80 RPM | 200 RPM |
| Removable Mop | No | Yes |
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Both of these clean thoroughly and run themselves with very little input from you. The Saros 20 is the stronger vacuum with more automation built in, while the Flow 2 offers a distinctive roller mop, a longer runtime, twice the warranty, and a lower price. Match the choice to whether floors or carpets dominate your home.
