Dreame Z1
#3 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 and the Seauto SAT20 Pro are evenly matched, rated 4.3 and 4.2. The Dreame Z1 leads on navigation.
Seauto SAT20 Pro
#5 in CordlessFull review
A tracked, sonar-guided full-pool robot at a low price for mid-size and large pools. Buyers who want scheduling or a clear warranty should look at WYBOT.
Amazon $299.99$299.99
Prices were last checked October 21, 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 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 SAT20 Pro |
|---|---|---|
| Overall rating | 4.3/5 | 4.2/5 |
| Value 25% | 92 $299 | 92 $300 |
| 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 | 50 warranty not published (neutral score used) |
| Pool size 10% | 100 pools up to 1,950 sq ft | 100 pools up to 2,150 sq ft |
| Features 10% | 50 too few features published (neutral score used) | 50 too few features published (neutral score used) |
Specifications
| Dreame Z1 | Seauto SAT20 Pro | |
|---|---|---|
| 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 |
| Surfaces | - | Tile, concrete, vinyl, fiberglass |
| Cleaning | ||
| Cleans | Floor, walls and waterline | Floor, walls and waterline |
| Surface skimming | No | No |
| Filter | 180 µm filter basket | - |
| Water flow | 8,000 gal/h | - |
| Power | ||
| Power | Cordless (battery) | Cordless (battery) |
| Battery | 194.4 Wh, 9,600 mAh | 168.5 Wh |
| Run time | Up to 5 h | Up to 2 h 30 min |
| Charge time | 6 h | 3 h |
| Charging | Magnetic connector | - |
| Navigation & app | ||
| Navigation | Ultrasonic + 3D structured light | Ultrasonic |
| App | - | No |
| Build | ||
| Water resistance | - | IP68 |
| Weight | 16.6 lb (7.5 kg) | 19.8 lb (9 kg) |
| Warranty | 2 years | - |