Polaris PCX 868 iQ
#4 in CordedFull review
A mid-priced app-controlled Polaris for in-ground pools up to 50 ft.
Leslie's $1,149 Walmart $1,149$1,149
The Polaris PCX 868 iQ and the Dolphin Sigma are evenly matched, rated 3.8 and 3.7. The Polaris PCX 868 iQ leads on value. The Dolphin Sigma wins on warranty. The Polaris PCX 868 iQ costs $1,250 less ($1,149 vs $2,399).
Dolphin Sigma
#6 in CordedFull review
A top dealer-line robot for large in-ground pools, with a three-year warranty.
Pool Express $2,399$2,399
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 Polaris PCX 868 iQ for value ($1,149 vs $2,399).
- Choose the Dolphin Sigma for warranty (3-year warranty vs 2-year warranty).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every corded robotic pool cleaner; a clear win is highlighted. How we rank explains each one.
| Factor weight | Polaris PCX 868 iQ | Dolphin Sigma |
|---|---|---|
| Overall rating | 3.8/5 | 3.7/5 |
| Value 25% | 34 $1,149 | 2 $2,399 |
| Cleaning 25% | 85 Floor, walls and waterline | 85 Floor, walls and waterline |
| Navigation 15% | 50 navigation not published (neutral score used) | 50 navigation not published (neutral score used) |
| Warranty 15% | 50 2-year warranty | 100 3-year warranty |
| Pool size 10% | 100 pools up to 50 ft long (about 1,250 sq ft) | 100 pools up to 50 ft long (about 1,250 sq ft) |
| Features 10% | 100 4 of 4 | 100 3 of 3 |
Specifications
| Polaris PCX 868 iQ | Dolphin Sigma | |
|---|---|---|
| Pool | ||
| Pool size (rated) | Up to 50 ft long | Up to 50 ft long |
| Pool types | In-ground | In-ground |
| Surfaces | All in-ground surfaces | - |
| Cleaning | ||
| Cleans | Floor, walls and waterline | Floor, walls and waterline |
| Surface skimming | No | No |
| Filter | 4 L all-purpose canister, transparent lid | Fine Filter Kit, top access; extra Ultra-Fine Filter Kit in the box |
| Filter capacity | 4 L | - |
| Water flow | - | 4,500 gal/h |
| Power | ||
| Power | Corded, 60 ft cable | Corded |
| Run time | - | Longest cycle 2 h 30 min |
| Swivel cable | Yes | Yes |
| Navigation & app | ||
| App | Yes | Yes |
| Connectivity | Wi-Fi | Bluetooth |
| Scheduling | Yes | Yes |
| Retrieval | Easy Lift from the app or control box | - |
| Caddy included | Yes | - |
| Build | ||
| Weight | 22 lb (10 kg) | 24.6 lb (11.2 kg) |
| Warranty | 2 years | 3 years |