Help me choose
A stronger Pool Express option
Dolphin Nautilus AG and Dolphin Nautilus EON 120d are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Cayman. Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
Nautilus
Dolphin Nautilus AG
Above-ground and small inground pools up to 30 ft that need the floor vacuumed.
EON
Dolphin Nautilus EON 120d
Inground and above-ground pools up to 50 ft that need whole-pool cordless cleaning with the least filter maintenance.
What we recommend instead
Dolphin Cayman
Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
$1,079
Buy Dolphin CaymanDolphin Nautilus AG or Dolphin Nautilus EON 120d: our take
Dolphin Nautilus AG and Dolphin Nautilus 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
Dolphin Nautilus AG is intended for above-ground pools, while Dolphin Nautilus EON 120d is intended for inground and above-ground pools. Dolphin Nautilus AG is rated for pools up to 30 ft; Dolphin Nautilus EON 120d is rated up to 50 ft. Dolphin Nautilus AG cleans floor; Dolphin Nautilus EON 120d cleans floor, walls, and waterline. Dolphin Nautilus AG lists 1 active brush and CleverClean navigation. Dolphin Nautilus EON 120d lists 2 active brushes and SmartMap navigation.
Filtration and debris
Dolphin Nautilus AG includes Basket; Dolphin Nautilus EON 120d includes Basket and UltraFilter. Dolphin Nautilus EON 120d has the clearer documented edge for fine silt, pollen and sand.
Controls and day-to-day ownership
Dolphin Nautilus AG provides one-touch starts and power-supply controls; Dolphin Nautilus EON 120d provides a weekly timer and smartphone control. Dolphin Nautilus AG uses continuous corded power, while Dolphin Nautilus EON 120d uses cordless battery power. Dolphin Nautilus AG is listed at 14.6 lb versus 24.3 lb for Dolphin Nautilus EON 120d; that 9.700000000000001 lb difference matters when lifting the robot from the pool.
Price, warranty and the decision
Dolphin Nautilus AG is listed at $568 and Dolphin Nautilus EON 120d at $1,199; Dolphin Nautilus AG is $631 less. Each lists a 1-year manufacturer warranty. Dolphin Nautilus AG and Dolphin Nautilus EON 120d each have a specific fit, but neither is the Pool Express pick for this job. Our better alternative is Dolphin Cayman. Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
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 Nautilus AG | Dolphin Nautilus EON 120d |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | No | YesEdge |
| Scrubs the waterline | No | YesEdge |
| Fine-debris filter included | No | YesEdge |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | No | YesEdge |
| 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 Nautilus AG stands out
Dolphin Nautilus AG is the better fit for shoppers prioritizing the lower $568 starting price.
- Runs from continuous plug-in power without a recharge between cycles
- Is listed $631 lower
- Weighs 14.6 lb versus 24.3 lb
Where Dolphin Nautilus EON 120d stands out
Dolphin Nautilus 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
- Uses 2 active brushes instead of 1
- Can start on a weekly schedule without a manual launch before every cycle
Dolphin Nautilus AG vs Dolphin Nautilus 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 Nautilus AG | Dolphin Nautilus EON 120d |
|---|---|---|
| Best fit | Above-ground and small inground pools up to 30 ft that need the floor vacuumed. | Inground and above-ground pools up to 50 ft that need whole-pool cordless cleaning with the least filter maintenance. |
| Starting price | $568 | $1,199 |
| Pool type | Above-ground | Inground, Above-ground |
| Maximum pool length | Up to 30 ft | Up to 50 ft |
| Cleaning coverage | Floor | Floor, Walls, Waterline |
| Power | Corded | Cordless |
| Filtration | Basket | Basket, UltraFilter |
| Scheduling | One-touch start | Weekly schedule + app |
| App and remote | Power-supply controls | App control |
| Cable | Not listed | Cordless |
| Robot weight | 14.6 lb | 24.3 lb |
| Warranty | 1 years | 1 years |
Consider the stronger Pool Express option
Dolphin Nautilus AG and Dolphin Nautilus EON 120d are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Cayman. Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
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