SAT40
Seauto's 2026 cordless pool robot, which uses sonar to plan its route across the floor, walls and waterline. It promises long runs and fine filtering, but nobody independent has tested it yet.
The short version
The SAT40 is the top model in Seauto's SAT range, launched in early 2026. It's cordless and tracked, with four motors, scrubbers front and back, and what Seauto calls sonar navigation: it listens for the pool walls to plan a tidy route instead of bouncing around at random. It cleans the floor, walls and waterline, runs for up to four hours on a charge, and parks itself when it's done. The app works over Bluetooth.
The catch is that everything here comes from Seauto. The only full independent test of a Seauto robot we found was of the cheaper Crab, and it went badly, so a sensible buyer waits for a proper test of this one. Charging takes four and a half hours, and there's no charging dock.
Our take: Wait for an independent test before buying. If you want a tested cordless robot for the floor, walls and waterline now, testers found the WYBOT C2 simple and effective in ordinary pools. If you'd pay more for a smarter, long-running robot, three testers found the Aiper Scuba V3's camera helps it find and clear debris.
Where it sits in Seauto’s range
- CrabCheaper cordless model with one button and no app · $339
- Seauto SAT30Next model down in the SAT range
- SAT40This model · $499
What we know so far
Limited evidence No independent, finished hands-on review of this robot yet. What follows comes from the maker's specifications and early coverage, and says where something is untested.
We haven't found a finished, independent test of the SAT40 yet. Everything below is what Seauto claims, so treat it as a list of things a reviewer should check rather than findings. The claims that matter most are sonar route planning, which should mean fewer missed patches than a robot that wanders, a very fine second filter for silt, and a four-hour battery. The only full independent test of a Seauto robot we found was PCWorld's review of the cheaper Crab, which found poor coverage, and that doesn't tell us how this model performs.
PCWorld, hands-on, Jun 2024 (tested on the Seauto Crab; This tests the cheaper Seauto Crab, a different robot, so it tells you about the brand, not the SAT40.)
Route planning is the big claim
Seauto says the SAT40 uses sonar and AI to plan its route across the whole pool, and lists floor, walls, waterline and automatic modes plus eco and turbo settings. If that works, it should cover a pool in tidy passes rather than wandering. Nobody has tested it independently yet. The last Seauto robot tested at length, the Crab, lingered in the shallow end and missed most of the dirt in PCWorld's pool, so this is the claim to watch.
Fine filtering on paper
Seauto pairs a large 250-micron cartridge with a 10-micron ultra-fine filter, which on paper should catch much finer silt than a basic mesh basket. Scrubbing comes from a fast front brush and a standard rear one, driven by four brushless motors. How easy the filters are to empty and refit is untested. That matters, because PCWorld found the Crab's cover hard to refit and saw dirt drain back out of it.
Long runs, slow charging
Seauto claims up to 240 minutes of cleaning from a 10,400mAh battery, which would be long for this price. Recharging takes four and a half hours through a plug-in adapter, and there's no dock, so you lift it out to charge it. It parks itself when the run ends, which should make collection easier, but at 19.8 pounds it's still a lift. None of this has been measured independently yet.
No independent review of the SAT40 yet. PCWorld's test covers the Seauto Crab, a different, cheaper model, and is cited only for context.
Prices
Where to buy the SAT40 in United States
| Retailer | Price | Delivery | Stock | Link |
|---|---|---|---|---|
| SeautoCheapest Official store | $499 | — | In stock | Go to Seauto |
We’re still looking for more United States retailers for this model. Prices shown are read from each seller’s own page.
Prices read from each seller’s own page on 24 September 2026. Some links are affiliate links and are marked where they appear. Commission never changes the order or the recommendation.
Before you buy
The questions people ask about this one
Does it climb walls and clean the waterline?
Seauto says it does, with a waterline mode and a front scrubber, per the specifications. No independent test has checked it yet, and the waterline was a weak spot on the cheaper Crab in PCWorld's test.
Is it cordless, and how long does a charge last?
Yes. Seauto claims up to 240 minutes a charge from a 10,400mAh battery, with four and a half hours to recharge through an adapter, per the specifications. There's no charging dock.
Will it work in an above-ground pool?
Seauto lists it for above-ground and in-ground pools of any shape, on concrete, vinyl liner or mosaic, up to 13ft deep, per the specifications. Nobody has tested it in either type of pool yet.
Does it need an app?
The app connects over Bluetooth and lets you pick among five cleaning modes, per the specifications. How well it works is untested; Seauto's cheaper Crab had no app at all, per PCWorld.
Compare with
C2
A tested cordless robot that cleans the floor, walls and waterline, then parks at the edge; two testers found it simple and effective.
A third tester found its suction weak.
Scuba V3
Three testers found its camera genuinely helps this cordless robot find and clear debris on floors, walls and the waterline.
You get about 10 minutes to collect it after a run before it sinks.
Sora 30
Testers found strong pickup, long runs and easy retrieval, and it copes with shallow ledges.
Its waterline scrub is weak and its filter is too coarse for fine dust.
Full specifications
Figures come from the manufacturer’s product page unless a source is named. A blank means nobody we trust has confirmed it.
Owner reviews
Own a SAT40?
Tell people how it’s held up: cleaning, maintenance, faults and support. Owner reviews are shown separately from expert tests and never mixed into the score.
Sources
Everything cited on this page. Expert scores are shown as the reviewer gave them.
- Seauto: Seauto SAT40 Cordless Robotic Pool Vacuum product pageManufacturer
- PCWorld: Seauto Crab robotic pool cleaner review: stick with the Shark · 1.5 / 5Hands-on · Tested on the Seauto Crab · This tests the cheaper Seauto Crab, a different robot, so it tells you about the brand, not the SAT40. (not counted towards our two-review minimum)