Free FedEx Shipping & 30 Day Trial
Your cart is empty
Free shipping on robots to contiguous 48 states
Our Pool Experts are here to assist you
Mon-Fri 8am-5:30pm CST
Head-to-Head Comparison
Our pool experts compare features, filtration, specs, and value to help you pick the right robotic pool cleaner.
Dolphin Proteus DX4 or Dolphin S400 — which wins?
Our pool experts break down the key features to look for when choosing between the Dolphin S400 and Dolphin Proteus DX4 — from filtration to cleaning coverage and warranty.
Shop Pool RobotsWhat Sets Them Apart
Side by Side
The features that matter most when comparing the Dolphin S400 and Dolphin Proteus DX4.
| Feature | S400 | Proteus DX4 |
|---|---|---|
| Standard Filter | ||
| Wall Climbing | ||
| Waterline Cleaning | ||
| Programmable Timer | ||
| Full Filter Indicator | ||
| Anti-Tangle Swivel |
Explained
An automatic pool cleaner should be automatic. A programmable weekly timer sets the robot to clean at different intervals — cleaning for you every day of the week without manually turning it on and off.
Know exactly when it's time to clean. The power supply alerts you directly when the filter is full — no need to pull out the unit to check.
Say goodbye to tangled cords. An anti-tangle swivel lets the robot move 360° around your pool without the cord getting tangled, so you can sit back while it cleans. Learn more ›
The Details
| S400 | Proteus DX4 | |
|---|---|---|
| Part Number | 99996261-US | 99996207-LSWF |
| Waterline Cleaning | Yes | Yes |
| Multi-Media® | No | No |
| Filters Included | Ultra-Fine Filter Kit | 1 |
| Filter Cleaning | Top Access | Top Access |
| Cleaning Coverage | Floor, Walls and Waterline | Floor, Walls and Waterline |
| Cleaning Cycle | 1.5, 2 hours | 2 hours |
| Number of Brushes | 2 | 2 |
| Cable Length | 60 ft | 60 ft |
| Anti-Tangle Swivel | Yes | Yes |
| Pool Types | In Ground | In Ground |
| Maximum Pool Size | 50 ft | 40 ft |
| Pool Shape | Rectangle, Oval, or Freeform | Rectangle, Oval, or Freeform |
| Obstacles | Steps, Ladder, Drain Cover, Ledges, Pop-Ups | Steps, Ladder, Drain Cover, Ledges, Pop-Ups |
| Surface | Gunite, Fiberglass, Vinyl, Liner | Gunite, Fiberglass, Vinyl, Liner |
| Media-Alert® | Yes | No |
| Automated Weekly Timer | Yes | Yes |
| Remote Operation | No | No |
| Restocking Fee | No | No |
| Warranty | 2 Years | 2 Years |
Go Deeper
Our in-depth reviews are written by pool experts to help you make an informed decision.
Keep Comparing
VS
VS
VS
VS
VS
VS
VS
VS
Every pool deserves an intelligent robot. If you don't love it, simply return it — we never charge a restocking fee. Free shipping on every order.
Shop Pool RobotsTalk to a Pool Expert
