The Dreame Z1 Pro is the better robotic pool cleaner overall, rated 4.4 to 3.8. The Dreame Z1 Pro leads on warranty. The Winny B1 costs $8.78 less ($324.98 vs $333.76).
Prices were last checked November 11, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
A well-equipped mid-price robot for above-ground or in-ground pools up to about 2,000 sq ft, with mapping and easy waterline parking. Pools with fine silt need a robot with a finer filter.
Amazon $333.76A WYBOT B1 lookalike for small pools. With no published runtime or coverage, buy the WYBOT B1 unless this one is clearly cheaper.
Amazon $324.98Each 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 Pro | Winny B1 |
|---|---|---|
| Overall rating | 4.4/5 | 3.8/5 |
| Value 25% | 87 $334 | 89 $325 |
| Cleaning 25% | 85 Floor, walls and waterline | 85 Floor, walls and waterline |
| Navigation 15% | 85 Ultrasonic + 3D structured light | 50 navigation not published (neutral score used) |
| Warranty 15% | 50 2-year warranty | 0 1-year warranty |
| Pool size 10% | 100 pools up to 2,160 sq ft | 50 pool size not published (neutral score used) |
| Features 10% | 100 3 of 3 | 100 2 of 2 |
| Dreame Z1 Pro | Winny B1 | |
|---|---|---|
| Pool | ||
| Pool size (rated) | Up to 2,160 sq ft (200 m²) | - |
| Pool types | In-ground and above-ground | In-ground and above-ground |
| Surfaces | Concrete, vinyl, fiberglass, tile | - |
| Max depth | 8.2 ft | - |
| Cleaning | ||
| Cleans | Floor, walls and waterline | Floor, walls and waterline |
| Surface skimming | No | No |
| Filter | 180 µm filter basket | - |
| Filter capacity | 4.5 L | - |
| Water flow | 8,000 gal/h | - |
| Power | ||
| Power | Cordless (battery) | Cordless (battery) |
| Battery | 194.4 Wh, 9,600 mAh | - |
| Run time | Up to 5 h | - |
| Charge time | 4 h | - |
| Charging | Magnetic connector | - |
| Navigation & app | ||
| Navigation | Ultrasonic + 3D structured light | - |
| App | Yes | Yes |
| Connectivity | Wi-Fi, Bluetooth | - |
| Scheduling | Yes | Yes |
| Retrieval | Parks at the waterline at a spot you choose | - |
| Build | ||
| Water resistance | IPX8 | - |
| Weight | 26.7 lb (12.1 kg) | 14.3 lb (6.5 kg) |
| Warranty | 2 years | 1 year |
| Released | 2025-03 | - |
