Help me choose
A stronger Pool Express option
Dolphin Explorer E50 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.
Explorer
Dolphin Explorer E50
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
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 QuantumDolphin Explorer E50 or Dolphin Nautilus EON 120d: our take
Dolphin Explorer E50 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 Explorer E50 is intended for inground pools, while Dolphin Nautilus EON 120d is intended for inground and above-ground pools. Both are rated for pools up to 50 ft. Each cleans floor, walls, and waterline, so coverage alone does not separate them. Dolphin Explorer E50 lists CleverClean navigation. Dolphin Nautilus EON 120d lists 2 active brushes and SmartMap navigation.
Filtration and debris
Both models include Basket and UltraFilter. Both have documented fine-debris media, so basket capacity and ease of cleaning matter more than fine-particle capability.
Controls and day-to-day ownership
Dolphin Explorer E50 provides a weekly timer, smartphone control, and included remote control; Dolphin Nautilus EON 120d provides a weekly timer and smartphone control. Dolphin Explorer E50 uses a 60 ft corded cable with an anti-tangle swivel, while Dolphin Nautilus EON 120d uses cordless battery power.
Price, warranty and the decision
Dolphin Explorer E50 is listed at $1,629 and Dolphin Nautilus EON 120d at $1,199; Dolphin Nautilus EON 120d is $430 less. Dolphin Explorer E50 lists a 2-year warranty compared with 1 years for Dolphin Nautilus EON 120d. Dolphin Explorer E50 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 | Dolphin Explorer E50 | Dolphin Nautilus EON 120d |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | Yes | Yes |
| Fine-debris filter included | Yes | Yes |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | Yes | Yes |
| Smartphone app | Yes | Yes |
| Anti-tangle swivel | Yes | 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 Explorer E50 stands out
Dolphin Explorer E50 is the better fit for inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
- Carries a 2-year warranty instead of 1 years
- Runs from continuous plug-in power without a recharge between cycles
Where Dolphin Nautilus EON 120d stands out
Dolphin Nautilus EON 120d is the better fit for shoppers prioritizing the lower $1,199 starting price.
- Is listed $430 lower
- Cleans floor, walls, waterline, steps and 8 in ledges
Dolphin Explorer E50 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 Explorer E50 | Dolphin Nautilus EON 120d |
|---|---|---|
| Best fit | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris. | Inground and above-ground pools up to 50 ft that need whole-pool cordless cleaning with the least filter maintenance. |
| Starting price | $1,629 | $1,199 |
| Pool type | Inground | Inground, Above-ground |
| Maximum pool length | Up to 50 ft | Up to 50 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor, Walls, Waterline |
| Power | Corded | Cordless |
| Filtration | Basket, UltraFilter | Basket, UltraFilter |
| Scheduling | Weekly schedule + app | Weekly schedule + app |
| App and remote | App + included remote | App control |
| Cable | 60 ft with anti-tangle swivel | Cordless |
| Robot weight | Not listed | 24.3 lb |
| Warranty | 2 years | 1 years |
Consider the stronger Pool Express option
Dolphin Explorer E50 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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