Roborock - Flexi Pro Wet/Dry vs Shark - Detect Pro Cordless IW1511
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Roborock - Flexi Pro Wet/Dry | Shark - Detect Pro Cordless IW1511 |
|---|---|---|
| Battery | 40 min | 60 min |
| Dustbin | 0.85 L | 0.7 L |
| Weight | 4.5 kg | 3.7 kg |
Between the Flexi Pro Wet/Dry and Detect Pro Cordless IW1511, the Flexi Pro Wet/Dry comes out ahead in dustbin, while the Detect Pro Cordless IW1511 wins on battery / weight. Overall, the Flexi Pro Wet/Dry scores 72.1 and the Detect Pro Cordless IW1511 scores 74.4 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (72.1 vs 74.4). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Flexi Pro Wet/Dry if you care most about dustbin. The biggest gaps in its favor are dustbin. The single most decisive one: Dustbin — 21.43% more. 0.85 L vs 0.7 L.
Pick the Detect Pro Cordless IW1511 if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are battery, weight. The single most decisive one: Battery — 50.00% more. 60 min vs 40 min.
Both ship with comparable suction (aw), cordless, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Roborock - Flexi Pro Wet/Dry or Shark - Detect Pro Cordless IW1511?
Shark - Detect Pro Cordless IW1511 leads the current Mars Score by 2.3 points.The more useful decision is the trade-off behind that result: compare battery, weight against the way you will actually use the product.
Choose Roborock - Flexi Pro Wet/Dry if…
Roborock - Flexi Pro Wet/Dry has the measurable edge on dustbin l.
Choose Shark - Detect Pro Cordless IW1511 if…
Shark - Detect Pro Cordless IW1511 has the measurable edge on battery min, weight kg.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Roborock - Flexi Pro Wet/Dry wins
- ▲Dustbin — 21.43% more. 0.85 L vs 0.7 L.
Why Shark - Detect Pro Cordless IW1511 wins
- ▲Battery — 50.00% more. 60 min vs 40 min.
- ▲Weight — 0.80 kg less. 3.7 vs 4.5.
Spec comparison
Performance
| Spec | Roborock - Flexi Pro Wet/Dry | Shark - Detect Pro Cordless IW1511 |
|---|---|---|
| Suction (AW) | 170 | 170 |
| Dustbin | 0.85 Llead | 0.7 L |
| Filter | HEPA | HEPA |
Design
| Spec | Roborock - Flexi Pro Wet/Dry | Shark - Detect Pro Cordless IW1511 |
|---|---|---|
| Type | Wet/dry cordlesslead | Cordless stick |
| Cordless | true | true |
| Weight | 4.5 kg | 3.7 kglead |
| Battery | 40 min | 60 minlead |