Dolphin Sigma
Dolphin says the Sigma is made for in-ground pools and cleans pools up to 50 ft long.
Maker’s list price: $2,999.
| Limit | Maker figure | Source |
|---|---|---|
| Pool type | in-ground | maytronics.com |
| Pool length, up to | 50 ft | maytronics.com |
| Climbs walls | yes | maytronics.com |
Not published by Dolphin: whether it is cordless.
On our guides
- Inground pool: clears the published limits
- Above-ground pool: misses a published limit
Maker figures, not our tests. Method.
Shopping for one? Start with cordless pool robots with no recall.
Amazon listing
No Amazon listing for the Dolphin Sigma itself. Not linked:
- A different model: Dolphin Nautilus CC Supreme Wi-Fi Automatic Robotic Pool Vacuum Cleaner, Dual Drive, Waterline Scrub
More limits Dolphin publishes
| Limit | Maker figure | Read from |
|---|---|---|
| Scrubs the waterline | yes | maytronics.com |
| Runtime | 150 min | maytronics.com |
| Weight | 24.6 lb | maytronics.com |
| Warranty | 3 years | maytronics.com |
| Filter | Fine Filter Kit (Ultra-Fine Filter Kit included) | maytronics.com |
| App | yes | maytronics.com |
Recall check (US and Canada): none found, November 2, 2026.
Other Dolphin models we track: E10, Explorer E50, Nautilus CC, Nautilus CC Plus, Nautilus CC Supreme.