We upgraded from our Dolphin S200 to the S400 because of the extra cleaning power, filtering and wireless control. We have had it now for 45 days and it seems to be working great keeping our pool clean. We love it.

The S400 does a great job cleaning the bottom, walls, and waterline of my in ground pool. I really love the auto out feature, where the Dolphin comes to the side and rises to the waterline so it can be removed. The ease of removing and cleaning the filter is also one of the best features. Other features that I enjoy, are the ability to schedule, turn on, and control the S400 via the phone app. The S400 comes with a caddy, for storage, so when the clean cycle is done, I remove it, clean the filter, rinse off the Dolphin and store it on the caddy, ready for the next use. It is just a great way to keep the pool clean with minimum hassle

Our in ground pool is cement. We live near a corn processing plant which result in small corn particles in the air which settle in the bottom of the pool and leaving a stain. Prior to buying our Dolphin we drained the pool to scrub the stain every spring. Very costly to replace water. We bought our Dolphin early last spring and used it every day from pool opening to closing. No more stains. Dolphin is excellent!

Vacuum’s very throughly. Easy to clean. Wi-fi so you can clean your pool from anywhere! Keeps the pool beautiful so it’s ready when you are!

I really miss the BAGS from the previous Dolphins. The bag held a log more compared to the basket. I do understand that with more "Intelligence" built into the S400 the more controlled the system must be. Otherwise, I love me "Robie 3"!!

Highly recommended. Keep pool clean in between service.

Joking aside the Dolphin S400 is great for your pool maintenance. We have been using our Dolphin for over 6months and we use the pool occasionally. Dolphin keeps the pool clean and fresh so that every time we take a plunge we have the best experience.