Help me choose
A stronger Pool Express option
Aquabot X2 and Dolphin Nautilus 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.
Aquabot
Aquabot X2
Inground and above-ground pools up to 40 ft that need floor cleaning.
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 Quantum
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
$1,649
Buy Dolphin QuantumAquabot X2 or Dolphin Nautilus EON 120d: our take
Aquabot X2 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
Both robots are intended for inground and above-ground pools. Aquabot X2 is rated for pools up to 40 ft; Dolphin Nautilus EON 120d is rated up to 50 ft. Aquabot X2 cleans floor; Dolphin Nautilus EON 120d cleans floor, walls, and waterline. Aquabot X2 lists 1 active brush. Dolphin Nautilus EON 120d lists 2 active brushes and SmartMap navigation.
Filtration and debris
Dolphin Nautilus EON 120d has documented included filtration—Basket and UltraFilter—while the other model's included media is not fully published. Dolphin Nautilus EON 120d has the clearer documented edge for fine silt, pollen and sand. Dolphin Nautilus EON 120d has the better documented path for bulky leaves and larger debris.
Controls and day-to-day ownership
Aquabot X2 provides no fully published timer, app or remote specification; Dolphin Nautilus EON 120d provides a weekly timer and smartphone control.
Price, warranty and the decision
Aquabot X2 is listed at $497 and Dolphin Nautilus EON 120d at $1,199; Aquabot X2 is $702 less. Aquabot X2 lists a 2-year warranty compared with 1 years for Dolphin Nautilus EON 120d. Aquabot X2 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 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 | Aquabot X2 | 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 | No | YesEdge |
| Automatic scheduling | Not listed | Yes |
| Smartphone app | Not listed | Yes |
| Anti-tangle swivel | Not listed | Not listed |
| 3-year warranty | No | No |
| No recharging between cycles | Not listed | 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 Aquabot X2 stands out
Aquabot X2 is the better fit for shoppers prioritizing the lower $497 starting price.
- Carries a 2-year warranty instead of 1 years
- Is listed $702 lower
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
- Includes a large-debris bin or bag for leaves
- Uses 2 active brushes instead of 1
Aquabot X2 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 | Aquabot X2 | Dolphin Nautilus EON 120d |
|---|---|---|
| Best fit | Inground and above-ground pools up to 40 ft that need floor cleaning. | Inground and above-ground pools up to 50 ft that need whole-pool cordless cleaning with the least filter maintenance. |
| Starting price | $497 | $1,199 |
| Pool type | Inground, Above-ground | Inground, Above-ground |
| Maximum pool length | Up to 40 ft | Up to 50 ft |
| Cleaning coverage | Floor | Floor, Walls, Waterline |
| Power | Not listed | Cordless |
| Filtration | Not listed | Basket, UltraFilter |
| Scheduling | Not listed | Weekly schedule + app |
| App and remote | Not listed | App control |
| Cable | Not listed | Cordless |
| Robot weight | Not listed | 24.3 lb |
| Warranty | 2 years | 1 years |
Consider the stronger Pool Express option
Aquabot X2 and Dolphin Nautilus 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.
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