Dyson - V15s Detect Submarine vs Roborock - H7 Cordless
Between the V15s Detect Submarine and H7 Cordless, the V15s Detect Submarine comes out ahead in dustbin and suction (aw), while the H7 Cordless wins on battery and weight. Overall, the V15s Detect Submarine scores 86 and the H7 Cordless scores 67 on our Mars Score.
Which should you buy?
The V15s Detect Submarine is the clear pick on raw spec strength, leading by 19.0 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the V15s Detect Submarine if you care most about dustbin and suction (aw). The biggest gaps in its favor are dustbin, suction (aw).
Pick the H7 Cordless if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are battery, weight.
Both ship with comparable cordless, so those specs don't separate the two — focus on the differences below.
Bottom line: the V15s Detect Submarine is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Dyson - V15s Detect Submarine wins
- ▲Dustbin — 54.00% more. 0.77 L vs 0.5 L.
- ▲Suction (AW) — 50.00% more. 240 vs 160.
Why Roborock - H7 Cordless wins
- ▲Battery — 50.00% more. 90 min vs 60 min.
- ▲Weight — 2.10 kg less. 1.4 vs 3.5.
Spec comparison
Performance
| Spec | Dyson - V15s Detect Submarine | Roborock - H7 Cordless |
|---|---|---|
| Suction (AW) | 240lead | 160 |
| Dustbin | 0.77 Llead | 0.5 L |
| Filter | HEPA H13 | HEPA |
Design
| Spec | Dyson - V15s Detect Submarine | Roborock - H7 Cordless |
|---|---|---|
| Type | Wet/dry cordlesslead | Cordless stick |
| Cordless | true | true |
| Weight | 3.5 kg | 1.4 kglead |
| Battery | 60 min | 90 minlead |
Spec-level deep dives
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