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A side-by-side comparison of the Dolphin Cayman and Dolphin Sigma — price, filtration, cleaning coverage, brushes and warranty — to help you pick the right Dolphin robotic pool cleaner.
| Feature | Cayman | Sigma |
|---|---|---|
| Price | $1299$1049 | $2999$2349 |
| Lineup | Max-Series™ | ProLine™ |
| Best for | In-ground or above-ground | The most advanced clean |
| Pool size | Up to 33 ft | Up to 50 ft |
| Cleaning coverage | Floor + Walls | Floor + Walls + Waterline |
| Scrubbing brushes | 2 (HyperBrush™) | 2 (Active brushes) |
| Filtration | MaxBin™ | NanoFilters™ |
| Control | Weekly timer | myDolphin™ Plus app + Gyro |
| Warranty | 2 years | 3 years |
The Dolphin Cayman is part of the Max-Series™ lineup — The best-value Max-Series™ performer with a weekly timer, for in-ground or above-ground pools. It cleans pools up to 33 ft with floor + walls coverage and MaxBin™ filtration, backed by a 2 years warranty.
The Dolphin Sigma is part of the ProLine™ lineup — The most advanced Dolphin ever, with a gyroscope and app control. It handles pools up to 50 ft with floor + walls + waterline coverage and NanoFilters™ filtration, backed by a 3 years warranty.
Both robots come from Dolphin's two top-recommended lineups — the Max-Series™ and the ProLine™ — so either is an excellent buy. For most pools we give the slight edge to the Dolphin Sigma: The most advanced Dolphin ever, with a gyroscope and app control. It delivers floor + walls + waterline coverage, NanoFilters™ filtration and a 3 years warranty.
The Dolphin Cayman is a strong alternative and saves you $1300 at $1049 — you won't go wrong with either.
Every Dolphin Max-Series™ and ProLine™ robotic pool cleaner ships free and is backed by a full manufacturer warranty — explore our top-recommended robots and find the right fit for your pool.
Shop Max-Series™ Shop ProLine™ Shop all DolphinThe Max-Series™ and ProLine™ deliver the best cleaning Dolphin makes. See how our top picks stack up head-to-head:
