Narwal Flow 2
Narwal’s flagship for hard-floor homes that want the best self-cleaning track mop and a low profile. Carpet-heavy homes get more from the cheaper Freo 20.
Amazon $1,099.99$1,099.99
The Narwal Flow 2 is the better robot vacuum overall, rated 4.0 to 3.9. The Narwal Flow 2 leads on value. The Roborock Saros 20 wins on cleaning. The Narwal Flow 2 costs $500 less ($1,099.99 vs $1,599.99).
Roborock Saros 20
For mixed-floor homes with high thresholds and low furniture that want a flagship that also cleans carpet well.
Amazon Roborock $1,599.99$1,599.99
Prices were last checked October 27, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Narwal Flow 2 for value ($1,100 vs $1,600).
- Choose the Roborock Saros 20 for cleaning (measured 89% of sand from carpet, 88% of pet hair, no hair tangled vs measured 84% of sand from carpet, 88% of pet hair, no hair tangled).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every self-cleaning dock robot vacuum; a clear win is highlighted. How we rank explains each one.
| Factor weight | Narwal Flow 2 | Roborock Saros 20 |
|---|---|---|
| Overall rating | 4.0/5 | 3.9/5 |
| Cleaning 30% | 68 measured 84% of sand from carpet, 88% of pet hair, no hair tangled | 80 measured 89% of sand from carpet, 88% of pet hair, no hair tangled |
| Value 25% | 30 $1,100 | 7 $1,600 |
| Dock 20% | 100 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, doses detergent, optional water hookup | 100 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, doses detergent, optional water hookup |
| Navigation 15% | 100 LiDAR + camera | 100 LiDAR + camera |
| Mopping 10% | 92 Roller, lifts 12 mm, extends to edges | 86 Dual spinning pads, leaves its mop at the dock for carpet, extends to edges |
Independent tests
Narwal Flow 2
| Tested by | Carpet deep clean | Pet hair | Hair tangle (0 = none) | Area per charge | Conditions |
|---|---|---|---|---|---|
| Vacuum Wars | 84% | 88% | 0 | 2,321 sq ft | Embedded sand in medium-pile carpet; flattened 2.5 in pet hair on carpet, two runs; 7 in hair tangle on hard floor (0 = none wrapped). |
Roborock Saros 20
| Tested by | Carpet deep clean | Pet hair | Hair tangle (0 = none) | Area per charge | Conditions |
|---|---|---|---|---|---|
| Vacuum Wars | 89% | 88% | 0 | 1,039 sq ft | Embedded sand in medium-pile carpet; flattened 2.5 in pet hair on carpet, two runs; 7 in hair tangle on hard floor (0 = none wrapped). |
Specifications
| Narwal Flow 2 | Roborock Saros 20 | |
|---|---|---|
| Vacuum | ||
| Claimed suction | 31,000 Pa | 36,000 Pa |
| Main brush | Anti-tangle roller brush | DuoDivide anti-tangle brush |
| Dustbin | - | 259 mL |
| Extending side brush | - | Yes |
| Mopping | ||
| Mop | Roller, lifts 12 mm, extends to edges | Dual spinning pads, leaves its mop at the dock for carpet, extends to edges |
| Mop lift | 12 mm | 15 mm |
| Leaves mop at dock | No | Yes |
| Extending mop | Yes | Yes |
| Water tank | 130 mL | 65 mL |
| Dock | ||
| Dock | Washes mop + empties | Washes mop + empties |
| Self-empties | Yes | Yes |
| Dust bag | 2.5 L | - |
| Washes mop | Yes | Yes |
| Hot-water wash | Yes | Yes |
| Hot-air drying | Yes | Yes |
| Detergent dosing | Yes | Yes |
| Water hookup option | Yes | Yes |
| Navigation & app | ||
| Navigation | LiDAR + camera | LiDAR + camera |
| Obstacle avoidance | Dual RGB cameras with an AI chip and vision language model; structured-light edge sensors | 3D ToF and RGB camera, recognises 300+ object types |
| Climbs thresholds | 30 mm | 88 mm |
| Matter | - | Yes |
| Voice assistants | Alexa, Google Assistant, Siri, Hey Nawa (built in) | Alexa, Google Assistant, Siri Shortcuts |
| Build | ||
| Height | 3.7 in (95 mm) | 3.1 in (79.8 mm) |
| Retracting LiDAR | No | No |
| Battery | 6,500 mAh | 6,400 mAh |
| Run time | - | Up to 3 h 20 min |
| Weight | 11 lb (5 kg) | - |
| Warranty | 1 year | 1 year |
| Released | 2026-04 | 2026-03 |