NEW
Dolphin Sigma Robotic Pool Cleaner
$2999 $2349 SALE Save $650
High-tech and high-power, the Dolphin Sigma robotic pool cleaner sits at the top of the ProLine with Triple Commercial Motors, NanoFilters, Gyroscope, & More.
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Free 1-3 Day FedEx Shipping 
3 Year Warranty Included 
30 Day Trial & No Restocking Fees 
Price Match Guarantee Need help? Speak to a Dolphin Pool Cleaner Specialist → Why Dolphin Sigma?
Three Commercial Motors
The Dolphin Sigma utilizes three commercial motors that are more powerful and more reliable. These ProLine™ exclusive motors take the pool cleaning to a new level.
NanoFilters™
Take your pool water to the next level with NanoFiltration™. These filters are able to capture what other robots miss. With included an NanoFilter™ set, experience the increased performance of the ProLine™.
Gyroscope & Wi‑Fi
The Dolphin Sigma uses advanced technology with gyroscope sensors and Wi-Fi, enabling precise cleaning with SmartNav 3.0™. Connect and control your Sigma from anywhere via the app to schedule and manage your pool cleaning.
No Restocking Fee & 30 Day Trial
Experience the Dolphin Sigma in your own pool for 30 days. With no restocking fees and a 50% longer 3 year warranty, feel confident in buying the Dolphin Sigma. Try our most advanced robotic pool cleaner yet in your own pool today.
INTRODUCING THE NEW 2026 SIGMA
Our Most High-Tech Robot Yet.
Experience ProLine™ performance combined with unparalleled technology. With an onboard gyroscope, three powerful commercial-grade motors, quad brush design, and the myDolphin Plus app, experience the most advanced Dolphin pool robot ever made.
What's Included
With a plug and play design, all you need to get started is a standard outlet. Simply plug the Dolphin Cayman in and it gets to work. Everything you need to get started is included in the box.
Dolphin Premier
NanoFilters™
Standard Filters
Power Supply with myDolphinPlus
60ft Cord with Anti‑Tangle Swivel
Manual + 3‑Year Warranty
TOP OF THE LINE
The Top ProLine™ Robot
The ultimate Dolphin pool robot. The Dolphin Sigma is our best robotic pool cleaner yet. Sigma combines all the advanced features you expect from a Dolphin ProLine™ pool robot and so much more.
Meet Sigma, the pinnacle of ProLine™ innovation. Experience the Dolphin Sigma in your pool for 30 days,. Enjoy no restocking fees and free shipping. Discover the ProLine™ difference today.
MORE ADVANCED.
Gyroscope Precision
Experience unparalleled precision with Dolphin Sigma's gyroscope technology. This innovative feature allows the Sigma to navigate your pool with pinpoint accuracy, ensuring every corner is covered. The gyroscope maintains balance and direction, preventing any missed spots and delivering a thorough clean every time.
GEN-2 FILTERS
NanoFiltration™
Embrace crystal-clear water with Dolphin Sigma’s NanoFilters. These high-tech NanoFilters capture the smallest debris and particles, ensuring your pool water is as clean as it is inviting. Say goodbye to cloudy water and hello to a pristine swimming experience with the power of NanoFilters.
THE ULTIMATE POOL FILTER
NanoFiltration
Experience a new level of clean. Crystal-clear water has never been easier. Powered by three commercial-grade motors and NanoFiltration™, the Dolphin Sigma unlocks a deeper clean. Through a process called sieving, these high-spun polyester filters are engineered to clean deeper than standard Dolphin mesh filters. Allowing you to get back to what is important, enjoying your pool.
FROM THE FLOORS TO THE WATERLINE
Waterline Cleaning Pro
Enjoy spotless pool edges with Dolphin Sigma's waterline cleaning feature. This innovative function targets the waterline, scrubbing away dirt and oils that accumulate at the surface. Maintain a pristine pool from top to bottom with effective waterline cleaning.
Dolphin Sigma’s HyperGrip tracks provide superior traction on all pool surfaces, ensuring efficient cleaning and excellent climbing ability. These tracks grip firmly, allowing the Sigma to maneuver easily and clean thoroughly, even on vertical surfaces.
THREE MOTORS. ONE ROBOT.
Triple Commercial-Grade Motors
The Dolphin Sigma uses three commercial-grade motors for enhanced power and efficiency. Taken from the Dolphin Wave Commercial lineup, the Dolphin Sigma brings commercial power at a lower cost with more features for residential pools. These powerful motors work in harmony to provide superior suction and maneuverability, tackling even the most stubborn dirt and debris. Enjoy a spotless pool with the unmatched cleaning performance of triple motors.
Benefit from continuous cleaning with Dolphin Sigma's efficient power management. Spend more time enjoying your pool and less time worrying about recharging, thanks to the Sigma’s enduring performance and reliable energy use.
SCRUB AND VACUUM LIKE NEVER BEFORE
Quad Scrubbing Brushes
Achieve a deeper clean with Dolphin Sigma's quad brushes. Designed to scrub and agitate dirt and algae from every surface, these four powerful brushes ensure no grime is left behind. Your pool walls and floor will shine with the comprehensive cleaning action of quad brushes.
A STEP ABOVE
SmartNav 3.0™ Scanning
Unlock intelligent pool cleaning with SmartNav 3.0. This advanced navigation system scans and maps your pool, optimizing the cleaning path for maximum efficiency. Ensure every inch of your pool is covered with the smart, precise cleaning of SmartNav 3.0™.
WITH A PRESS OF A BUTTON
Always Connected with Wi-Fi
Stay connected with Dolphin Sigma’s Wi-Fi capability. Effortlessly control and monitor your pool cleaner from anywhere using your smartphone or tablet. Schedule cleanings, check status, and receive updates with the convenience of Wi-Fi connectivity.
MYDOLPHIN PLUS APP
"Hey Siri, Clean my Pool"
Take pool maintenance to the next level with the MyDolphin Plus app. This intuitive app allows you to customize cleaning schedules, choose cleaning modes, and receive real-time notifications. Manage your Dolphin Sigma with ease and precision through the MyDolphin Plus app.
With voice command, tell Siri "Hey Siri, Clean my pool" and your Sigma gets to work. With cusotmizable scheduler, manual control, cleaning history, and more, the Dolphin Sigma unlocks a plethora of features not seen before in any other pool robot.
PATENTED TECHNOLOGY
360 Anti-Tangle Swivel
Experience seamless cleaning with Dolphin Sigma’s Anti-Tangle Swivel. This innovative feature prevents the cable from tangling, ensuring uninterrupted operation and ease of use. Enjoy hassle-free pool cleaning with the reliable anti-tangle swivel.
30 DAY TRIAL
3 Year Warranty & 30 Day Trial
With a longer 3-year warranty and 30 day trial, try the Dolphin Sigma in your own pool. Our commitment to quality ensures your robotic pool cleaner is built to last. If you're not completely satisfied, return it. Enjoy full peace of mind with a 50% longer 3 year warranty and trial.
Where to Buy
Buy from us or shop all Authorized Dolphin Dealers and buy your Dolphin Sigma Robotic Pool Cleaner today.
NEW
Dolphin Sigma Robotic Pool Cleaner
$2349
High-tech and high-power, the Dolphin Sigma robotic pool cleaner sits at the top of the ProLine with Triple Commercial Motors, NanoFilters, Gyroscope, & More.
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