Narwal Flow
The first Narwal track-mop robot, still a good hard-floor mopper. The Flow 2 does more for similar money.
Amazon $1,249.99$1,249.99
The Narwal Flow is the better robot vacuum overall, rated 3.9 to 3.8. The Narwal Flow leads on mopping. The Narwal Flow costs $35.97 less ($1,249.99 vs $1,285.96).
Prices were last checked November 4, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Shark PowerDetect UV Reveal
For pet owners with large homes who want a hot-wash dock and long runs: it covered about 2,800 sq ft per charge and scored well on pet hair.
Amazon $1,285.96$1,285.96
Which should you buy?
- Choose the Narwal Flow for mopping (Roller, lifts 12 mm, extends to edges vs Vibrating pad, extends to edges).
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 | Shark PowerDetect UV Reveal |
|---|---|---|
| Overall rating | 3.9/5 | 3.8/5 |
| Cleaning 30% | 65 measured 83% of sand from carpet, 88.5% of pet hair, no hair tangled | 72 measured 88% of sand from carpet, 91.5% of pet hair, some hair tangled (0.3) |
| Value 25% | 22 $1,250 | 21 $1,286 |
| Dock 20% | 95 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, optional water hookup | 100 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying |
| Navigation 15% | 100 LiDAR + camera | 100 LiDAR + camera |
| Mopping 10% | 92 Roller, lifts 12 mm, extends to edges | 46 Vibrating pad, extends to edges |
Independent tests
Narwal Flow
| Tested by | Carpet deep clean | Pet hair | Hair tangle (0 = none) | Area per charge | Conditions |
|---|---|---|---|---|---|
| Vacuum Wars | 83% | 88.5% | 0 | 1,399 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). |
Shark PowerDetect UV Reveal
| Tested by | Carpet deep clean | Pet hair | Hair tangle (0 = none) | Area per charge | Conditions |
|---|---|---|---|---|---|
| Vacuum Wars | 88% | 91.5% | 0.3 | 2,803 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 | Shark PowerDetect UV Reveal | |
|---|---|---|
| Vacuum | ||
| Claimed suction | 22,000 Pa | - |
| Main brush | Single-side roller brush (DualFlow tangle-free system) | - |
| Dustbin | - | 379 mL |
| Extending side brush | No | - |
| Mopping | ||
| Mop | Roller, lifts 12 mm, extends to edges | Vibrating pad, extends to edges |
| Mop lift | 12 mm | - |
| Leaves mop at dock | No | - |
| Extending mop | Yes | Yes |
| Water tank | 130 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 | No | - |
| Water hookup option | Yes | - |
| Navigation & app | ||
| Navigation | LiDAR + camera | LiDAR + camera |
| Obstacle avoidance | Dual RGB cameras with AI, recognises 200+ object types; laser edge sensors | AI camera and 3D sensors; UV Stain Detect finds dried, invisible stains on hard floors |
| Climbs thresholds | 30 mm | - |
| Matter | Yes | No |
| Voice assistants | Alexa, Google Assistant, Siri, Hey Nawa (built in) | Alexa, Google Assistant |
| Build | ||
| Height | 3.7 in (95 mm) | - |
| Retracting LiDAR | No | - |
| Battery | 5,900 mAh | - |
| Run time | - | Up to 3 h |
| Weight | 11 lb (5 kg) | - |
| Warranty | 1 year | 2 years |
| Released | 2025-08 | 2026-03 |