Dreame Z1
#1 in CordlessFull review
A strong-value cordless robot for small-to-mid-size pools whose owners want long runtime and real navigation for about $300. Fine silt needs a robot with a finer filter.
Dreame $299$299
The Dreame Z1 is the better robotic pool cleaner overall, rated 4.5 to 4.0. The Dreame Z1 leads on warranty and navigation. The Seauto SAT 25 costs $29.01 less ($269.99 vs $299).
Seauto SAT 25
#17 in CordlessFull review
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 $269.99$269.99
Prices 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.
Which should you buy?
- Choose the Dreame Z1 for warranty (2-year warranty vs 1-year warranty) and navigation (Ultrasonic + 3D structured light vs Ultrasonic).
Scores side by side
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 | Dreame Z1 | Seauto SAT 25 |
|---|---|---|
| Overall rating | 4.5/5 | 4.0/5 |
| Value 25% | 92 $299 | 97 $270 |
| Cleaning 25% | 85 Floor, walls and waterline | 85 Floor, walls and waterline |
| Navigation 15% | 85 Ultrasonic + 3D structured light | 75 Ultrasonic |
| Warranty 15% | 50 2-year warranty | 0 1-year warranty |
| Pool size 10% | 100 pools up to 1,950 sq ft | 100 pools up to 2,150 sq ft |
| Features 10% | 100 2 of 2 | 50 1 of 2; no caddy |
Specifications
| Dreame Z1 | Seauto SAT 25 | |
|---|---|---|
| Pool | ||
| Pool size (rated) | Up to 1,950 sq ft (181 m²) | Up to 2,150 sq ft (200 m²) |
| Pool types | In-ground and above-ground | In-ground and above-ground |
| Surfaces | Concrete, vinyl, fiberglass, tile | Tile, concrete, vinyl |
| Max depth | 8.2 ft | 9.8 ft |
| Cleaning | ||
| Cleans | Floor, walls and waterline | Floor, walls and waterline |
| Surface skimming | No | No |
| Filter | 180 µm filter basket | 300 µm filter basket |
| Filter capacity | 4.5 L | - |
| Water flow | 8,000 gal/h | 5,500 gal/h |
| Power | ||
| Power | Cordless (battery) | Cordless (battery) |
| Battery | 194.4 Wh, 9,600 mAh | 7,800 mAh |
| Run time | Up to 5 h | Up to 3 h |
| Charge time | 6 h | 4 h |
| Charging | Magnetic connector | Cable |
| Navigation & app | ||
| Navigation | Ultrasonic + 3D structured light | Ultrasonic |
| App | Yes | Yes |
| Retrieval | Climbs to the waterline for pickup when done or low on battery | - |
| Caddy included | - | No |
| Build | ||
| Water resistance | - | IPX8 |
| Weight | 16.6 lb (7.5 kg) | 14.3 lb (6.5 kg) |
| Warranty | 2 years | 1 year |