Help me choose
A stronger Pool Express option
Dolphin Cayman and Dolphin EON 120d are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
Max-Series
Dolphin Cayman
Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
EON
Dolphin EON 120d
Inground and above-ground pools up to 50 ft that need whole-pool cordless cleaning with minimal filter maintenance and a three-year warranty.
What we recommend instead
Dolphin Quantum
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
$1,649
Buy Dolphin QuantumDolphin Cayman or Dolphin EON 120d: our take
Dolphin Cayman and Dolphin EON 120d 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 EON 120d is rated up to 50 ft. Dolphin Cayman cleans floor and walls; Dolphin EON 120d cleans floor, walls, and waterline. Dolphin Cayman lists 1 active brush, SmartNav 2.0 navigation, and Dual 24-volt DC motors. Dolphin EON 120d lists SmartMap navigation.
Filtration and debris
Dolphin Cayman includes MaxBin; Dolphin EON 120d includes Basket and UltraFilter. Dolphin EON 120d has the clearer documented edge for fine silt, pollen and sand.
Controls and day-to-day ownership
Dolphin Cayman provides a weekly timer and power-supply controls; Dolphin EON 120d provides a weekly timer and smartphone control. Dolphin Cayman uses a 50 ft corded cable, while Dolphin EON 120d uses cordless battery power. Dolphin Cayman is listed at 14.6 lb versus 24.3 lb for Dolphin EON 120d; that 9.700000000000001 lb difference matters when lifting the robot from the pool.
Price, warranty and the decision
Dolphin Cayman lists a 2-year warranty compared with 3 years for Dolphin EON 120d. Dolphin Cayman and Dolphin EON 120d each have a specific fit, but neither is the Pool Express pick for this job. Our better alternative is Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
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 EON 120d |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | No | YesEdge |
| Fine-debris filter included | No | YesEdge |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | Yes | Yes |
| Smartphone app | No | YesEdge |
| Anti-tangle swivel | No | Not listed |
| 3-year warranty | No | YesEdge |
| 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.
- Runs from continuous plug-in power without a recharge between cycles
- Weighs 14.6 lb versus 24.3 lb
Where Dolphin EON 120d stands out
Dolphin EON 120d is the better fit for owners who value cordless handling more than automatic scheduling and continuous power.
- Cleans the floor, walls and waterline instead of stopping below the tile line
- Includes filtration for sand, pollen and other fine debris
- Adds smartphone control
- Carries a 3-year warranty instead of 2 years
Dolphin Cayman vs Dolphin EON 120d 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 EON 120d |
|---|---|---|
| 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 that need whole-pool cordless cleaning with minimal filter maintenance and a three-year warranty. |
| Starting price | $1,079 | See product |
| 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, UltraFilter |
| Scheduling | Weekly schedule | Weekly schedule + app |
| App and remote | Power-supply controls | App control |
| Cable | 50 ft | Cordless |
| Robot weight | 14.6 lb | 24.3 lb |
| Warranty | 2 years | 3 years |
Consider the stronger Pool Express option
Dolphin Cayman and Dolphin EON 120d are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
More robotic pool cleaner comparisons
Keep comparing without rebuilding the same specification table yourself.
Clear UV vs Clear S
Pool Express pick: Clear UV
Dolphin Quantum vs Clear S
Pool Express pick: Dolphin Quantum
Dolphin Premier vs Dolphin Sigma
Pool Express pick: Dolphin Premier
Dolphin Premier vs Dolphin Quantum
Pool Express pick: Dolphin Quantum
Dolphin Sigma vs Dolphin Quantum
Pool Express pick: Dolphin Quantum
Dolphin Cayman vs Dolphin Escape
Pool Express pick: Dolphin Cayman