The Seauto SAT 25 is the better robotic pool cleaner overall, rated 4.0 to 3.7. The Seauto SAT 25 leads on value and navigation. The Seauto SAT 25 costs $230 less ($269.99 vs $499.99).
A low-cost, sonar-guided cordless robot for in-ground and above-ground pools up to about 2,150 sq ft that need floor, wall and waterline cleaning. Pools with fine silt, raised drains or sharp steps need a different robot.
Amazon $269.99A sensible first robot for mid-size pools whose owners want fine filtration and app scheduling for about $500. Ecovacs says it’s for daily upkeep, not heavy-duty cleaning.
Ecovacs $499.99Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Each factor is scored 0-100 against the same fixed reference points for every cordless robotic pool cleaner; a clear win is highlighted. How we rank explains each one.
| Factor weight | Seauto SAT 25 | Ecovacs Ultramarine P1 |
|---|---|---|
| Overall rating | 4.0/5 | 3.7/5 |
| Value 25% | 97 $270 | 70 $500 |
| Cleaning 25% | 85 Floor, walls and waterline | 85 Floor, walls and waterline |
| Navigation 15% | 75 Ultrasonic | 50 Gyroscope |
| Warranty 15% | 0 1-year warranty | 0 1-year warranty |
| Pool size 10% | 100 pools up to 2,150 sq ft | 100 pools up to 1,940 sq ft |
| Features 10% | 50 1 of 2; no caddy | 67 2 of 3; no easy pickup |
| Seauto SAT 25 | Ecovacs Ultramarine P1 | |
|---|---|---|
| Pool | ||
| Pool size (rated) | Up to 2,150 sq ft (200 m²) | Up to 1,937 sq ft (180 m²) |
| Pool types | In-ground and above-ground | In-ground and above-ground |
| Surfaces | Tile, concrete, vinyl | Fiberglass, pebble |
| Max depth | 9.8 ft | 9.8 ft |
| Cleaning | ||
| Cleans | Floor, walls and waterline | Floor, walls and waterline |
| Surface skimming | No | No |
| Filter | 300 µm filter basket | Dual-layer filter (180 µm mesh + 3 µm ultra-fine) |
| Water flow | 5,500 gal/h | 4,800 gal/h |
| Power | ||
| Power | Cordless (battery) | Cordless (battery) |
| Battery | 7,800 mAh | 4,600 mAh, 24 V |
| Run time | Up to 3 h | Up to 3 h |
| Charge time | 4 h | 4 h |
| Charging | Cable | Cable |
| Navigation & app | ||
| Navigation | Ultrasonic | Gyroscope |
| App | Yes | Yes |
| Connectivity | - | Bluetooth |
| Scheduling | - | Yes |
| Retrieval | - | Stops near the pool edge when done (hook included) |
| Caddy included | No | - |
| Build | ||
| Water resistance | IPX8 | IP68 |
| Weight | 14.3 lb (6.5 kg) | - |
| Warranty | 1 year | 1 year |
| Released | - | 2026 |
