Help me choose
Our pick: Dolphin Cayman
Dolphin Cayman is the Pool Express pick in this matchup. Dolphin Cayman carries a 2-year warranty instead of 1 years. Dolphin Cayman runs from continuous plug-in power without a recharge between cycles.
Max-Series
Dolphin Cayman
Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
EON
Dolphin Nautilus EON 100
Inground and above-ground pools up to 50 ft with steps, benches or tanning ledges that need whole-pool cordless cleaning.
Why Dolphin Cayman is our pick
Dolphin Cayman
Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
$1,079
Buy Dolphin CaymanDolphin Cayman or Dolphin Nautilus EON 100: our take
Dolphin Cayman and Dolphin Nautilus EON 100 are compared on pool fit, cleaning reach, debris handling, controls and ownership details. The recommendation is based on the job the robot must do—not a simple feature count.
Pool fit and cleaning reach
Both robots are intended for inground and above-ground pools. Dolphin Cayman is rated for pools up to 40 ft; Dolphin Nautilus EON 100 is rated up to 50 ft. Dolphin Cayman cleans floor and walls; Dolphin Nautilus EON 100 cleans floor, walls, and waterline. Dolphin Cayman lists 1 active brush, SmartNav 2.0 navigation, and Dual 24-volt DC motors. Dolphin Nautilus EON 100 lists 2 active brushes and SmartMap navigation.
Filtration and debris
Dolphin Cayman includes MaxBin; Dolphin Nautilus EON 100 includes Basket.
Controls and day-to-day ownership
Dolphin Cayman provides a weekly timer and power-supply controls; Dolphin Nautilus EON 100 provides a weekly timer and smartphone control. Dolphin Cayman uses a 50 ft corded cable, while Dolphin Nautilus EON 100 uses cordless battery power. Dolphin Cayman is listed at 14.6 lb versus 22.1 lb for Dolphin Nautilus EON 100; that 7.500000000000002 lb difference matters when lifting the robot from the pool.
Price, warranty and the decision
Dolphin Cayman is listed at $1,079 and Dolphin Nautilus EON 100 at $899; Dolphin Nautilus EON 100 is $180 less. Dolphin Cayman lists a 2-year warranty compared with 1 years for Dolphin Nautilus EON 100. Pool Express pick: Dolphin Cayman. Dolphin Cayman carries a 2-year warranty instead of 1 years. Dolphin Cayman runs from continuous plug-in power without a recharge between cycles. Choose Dolphin Nautilus EON 100 when it is the better fit for shoppers prioritizing the lower $899 starting price.
Feature check: what each robot actually has
A green check means the feature is documented as included. A red X means it is documented as absent. A dash means the source does not make the feature clear.
| Feature | Dolphin Cayman | Dolphin Nautilus EON 100 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | No | YesEdge |
| Fine-debris filter included | No | No |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | Yes | Yes |
| Smartphone app | No | YesEdge |
| Anti-tangle swivel | No | Not listed |
| 3-year warranty | No | No |
| No recharging between cycles | YesEdge | No |
| Built-in UV-C water treatment | No | No |
Unknown is not treated as “no.” Specifications come from the product pages, current catalog records and manufacturer material collected for this site.
Where Dolphin Cayman stands out
Dolphin Cayman is the better fit for inground and above-ground pools up to 40 ft that need floor and wall cleaning.
- Carries a 2-year warranty instead of 1 years
- Runs from continuous plug-in power without a recharge between cycles
- Weighs 14.6 lb versus 22.1 lb
Where Dolphin Nautilus EON 100 stands out
Dolphin Nautilus EON 100 is the better fit for shoppers prioritizing the lower $899 starting price.
- Cleans the floor, walls and waterline instead of stopping below the tile line
- Uses 2 active brushes instead of 1
- Adds smartphone control
- Is rated for pools up to 50 ft
Dolphin Cayman vs Dolphin Nautilus EON 100 specifications
Use pool fit first. Price and app control do not make up for a robot that cannot cover the length or surfaces you need cleaned.
| Specification | Dolphin Cayman | Dolphin Nautilus EON 100 |
|---|---|---|
| Best fit | Inground and above-ground pools up to 40 ft that need floor and wall cleaning. | Inground and above-ground pools up to 50 ft with steps, benches or tanning ledges that need whole-pool cordless cleaning. |
| Starting price | $1,079 | $899 |
| Pool type | Inground, Above-ground | Inground, Above-ground |
| Maximum pool length | Up to 40 ft | Up to 50 ft |
| Cleaning coverage | Floor, Walls | Floor, Walls, Waterline |
| Power | Corded | Cordless |
| Filtration | MaxBin | Basket |
| Scheduling | Weekly schedule | Weekly schedule + app |
| App and remote | Power-supply controls | App control |
| Cable | 50 ft | Cordless |
| Robot weight | 14.6 lb | 22.1 lb |
| Warranty | 2 years | 1 years |
Choose Dolphin Cayman
Dolphin Cayman is the Pool Express pick in this matchup. Dolphin Cayman carries a 2-year warranty instead of 1 years. Dolphin Cayman runs from continuous plug-in power without a recharge between cycles.
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