Dolphin M400 vs S300i

Further down the page, you’ll find some explanations regarding the key similarities and differences between the Dolphin M400 and the Dolphin S300i.

But before checking out explanations regarding their portability, cleaning, and connectivity & automation, here’s a table that summarizes the main technical summary sheet for these 2 robot pool cleaners:

Dolphin S300i Dolphin M400
Weight 18.5 pounds 26,9 pounds
Size 23.66 x 19.33 x 18.93 inches 23.6 x 19,3 x 19,5 inches
Pool Size Up to 50 Ft Up to 50 Ft
Pool Type In-Ground In-Ground
Anti-Tangle Swivel Cable Yes Yes
Cable Length 60 feet 60 feet
Filter Type Multi-Layer Fine, Ultra Fine
Filter Access Top Access Top Access
Filter Description Extra Large Basket, Top-load Cartridge, Top-load
Cleaning Coverage Floor, Walls, Waterline Floor, Walls, Waterline
Cleaning Mode(s) Standard, Quick Clean, Enhanced Standard, Quick Clean, Enhanced
Cleaning Cycle(s) 1 or 2 hrs. (1.​5 and 2.​5 hrs. available in app) 2.5 Hours
Mobility PowerStream CleverClean™
Suction Rate 4000 gph 4500 gph
Number of Brushes 2 Brushes 3 Brushes
Waterline Scrubbing Yes Yes
Brush Type Standard Brush Standard Brush
Active Brushes 1 Active 1 Active
Remote Control No No
Wi-Fi® Yes Yes
MyDolphin™ Plus App Yes Yes
Weekly Timer Yes Yes
Cycle Selector Yes No
Delay Mode Yes No
Full Bag Indicator No Yes
Delay Feature Yes No
Automation Mode Yes Yes
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