Help me choose
A stronger Pool Express option
Aquabot Elite Pro and Dolphin M400 are compared feature by feature below. For a stronger Pool Express option, consider Clear S. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
Aquabot
Aquabot Elite Pro
Inground pools that need floor, wall and waterline cleaning.
M-Line
Dolphin M400
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
What we recommend instead
Clear S
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
$1,749
Buy Clear SAquabot Elite Pro or Dolphin M400: our take
Aquabot Elite Pro and Dolphin M400 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 pools. Dolphin M400 has a published maximum pool length of 50 ft; the other model does not have a verified length in our source material. Each cleans floor, walls, and waterline, so coverage alone does not separate them. Aquabot Elite Pro's documented cleaning system includes AquaSmart navigation.
Filtration and debris
Aquabot Elite Pro includes Standard filter; Dolphin M400 includes Standard filter and UltraFilter. Dolphin M400 has the clearer documented edge for fine silt, pollen and sand.
Controls and day-to-day ownership
Both models provide smartphone control.
Price, warranty and the decision
Aquabot Elite Pro is listed at $999 and Dolphin M400 at $1,599; Aquabot Elite Pro is $600 less. Each lists a 3-year manufacturer warranty. Aquabot Elite Pro and Dolphin M400 each have a specific fit, but neither is the Pool Express pick for this job. Our better alternative is Clear S. 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 Elite Pro | Dolphin M400 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | Yes | Yes |
| Fine-debris filter included | No | YesEdge |
| Large-debris filter | No | No |
| Automatic scheduling | Not listed | Not listed |
| Smartphone app | Yes | Yes |
| Anti-tangle swivel | Not listed | Yes |
| 3-year warranty | Yes | Yes |
| No recharging between cycles | Not listed | Yes |
| 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 Elite Pro stands out
Aquabot Elite Pro is the better fit for shoppers prioritizing the lower $999 starting price.
- Is listed $600 lower
- Standard filters
Where Dolphin M400 stands out
Dolphin M400 is the better fit for inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
- Includes filtration for sand, pollen and other fine debris
- 60 ft cable with anti-tangle swivel
Aquabot Elite Pro vs Dolphin M400 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 Elite Pro | Dolphin M400 |
|---|---|---|
| Best fit | Inground pools that need floor, wall and waterline cleaning. | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris. |
| Starting price | $999 | $1,599 |
| Pool type | Inground | Inground |
| Maximum pool length | Not listed | Up to 50 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor, Walls, Waterline |
| Power | Not listed | Corded |
| Filtration | Standard filter | Standard filter, UltraFilter |
| Scheduling | Not listed | Not listed |
| App and remote | App control | App control |
| Cable | Not listed | 60 ft with anti-tangle swivel |
| Robot weight | Not listed | Not listed |
| Warranty | 3 years | 3 years |
Consider the stronger Pool Express option
Aquabot Elite Pro and Dolphin M400 are compared feature by feature below. For a stronger Pool Express option, consider Clear S. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
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