Main trade-off
ECOVACS ULTRAMARINE P1
ECOVACS states that the P1 is not designed to clean steps.
Head-to-head
The P1 has the finer 3-micron stage and faster published flow. The C2 covers a little more area and offers seven clearly defined cleaning modes.
Before you choose
For “Coverage”, the published figure is 11% higher for WYBOT C2, at 2,152 sq ft compared with 1,937 sq ft for ECOVACS ULTRAMARINE P1.
What this is based on
Treat this published coverage as a sizing boundary under the stated conditions, not a guarantee for every layout. The percentage uses the lower published figure as the baseline.
Main trade-off
ECOVACS states that the P1 is not designed to clean steps.
Main trade-off
At 17.6 pounds dry, it is heavier than simple floor-only cordless models.


Compare two smart cordless cleaners with secondary fine filters.
The practical choice turns on coverage and fine filter, then on the constraints in your own setup.
Winner by situation
Its documented recurring mode spreads cleaning across visits. Check battery, floor-only, debris and maintenance limits before leaving it scheduled.
Its documented cleaning zone includes the waterline.
Its intake and debris canister have useful capacity for leaves and twigs.
Check the supported mode and connection state before relying on remote direction. Some models only respond at the surface.
For fine filter, ECOVACS ULTRAMARINE P1 records “3 micron” and WYBOT C2 records “10 micron”. This identifies what the treatment path is built to capture or reduce and what recurring care it requires.
What matters in practice
For “Coverage”, the published figure is 11% higher for WYBOT C2, at 2,152 sq ft compared with 1,937 sq ft for ECOVACS ULTRAMARINE P1.
Treat this published coverage as a sizing boundary under the stated conditions, not a guarantee for every layout. The percentage uses the lower published figure as the baseline.
ECOVACS ULTRAMARINE P1 has the stronger fit for “I want recurring cleaning on a schedule”. WYBOT C2 has the stronger fit for “The waterline needs regular scrubbing” and “Leaves and larger debris are the main problem”.
This compares the current strong and useful fit assignments for the exact products. It does not turn them into one overall score.
Both products cover the same 3 of 3 buyer requirements attached to this comparison. The choice moves to “coverage” and “fine filter”.
This checks the two products against the same selected needs, then names the first verified differences that remain.
6 of 27 checked robot pool cleaners cover both “I do not want a cable across the pool” and “Fine dust, sand or dead algae settles in my pool”. Both products are in that group.
The count is reproduced by filtering the current category dataset for products with a strong or useful fit for both needs.

ECOVACS, P1
A high-flow cordless robot with unusually fine secondary filtration and planned app-based cleaning.

WYBOT, 2026 Upgrade
The broadest WYBOT fit here, with a three-hour battery, seven modes and a 10-micron secondary filter.
Meaningful differences
| What changes | ECOVACS ULTRAMARINE P1 | WYBOT C2 | Why it matters |
|---|---|---|---|
| Coverage | 1,937 sq ft | 2,152 sq ft | Treat this published coverage as a sizing boundary under the stated conditions, not a guarantee for every layout. |
| Fine filter | 3 micron | 10 micron | This identifies what the treatment path is built to capture or reduce and what recurring care it requires. |
| Flow | 4,800 GPH | 3,592 GPH | The published output matters only when the room, surface or workload needs the extra headroom. It does not prove better results by itself. |
| Steps | Not designed for steps | No universal step guarantee | This changes how many steps the user handles and how much of the routine is automated. |
What you give up
What the facts say
Useful conclusions from the current robot pool cleaners comparison, followed by the checked facts used to reach them.
Only 5 of 27 models checked match every need here: “I do not want a cable across the pool”, “Fine dust, sand or dead algae settles in my pool”, and “I want controls and status in an app”.
5 matching models from 27 checkedMatch countThe count uses the current product-to-need assignments for “I do not want a cable across the pool”, “Fine dust, sand or dead algae settles in my pool”, and “I want controls and status in an app”. A need with no documented match does not count.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| ECOVACS ULTRAMARINE P1 |
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| WYBOT C2 |
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Ready to choose?
Open either model on Amazon to check the current price, customer reviews and delivery options.

Fine suspended dust is the main problem.
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Maximum rated area matters.
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