Head-to-Head Comparison

Dolphin Oasis Z5i vs Dolphin Cayman

Our pool experts compare features, filtration, specs, and value to help you pick the right robotic pool cleaner.

Dolphin Oasis Z5i

Explore Dolphin Proteus →

View Oasis Z5i

Our Top Pick

Dolphin Cayman

Explore Dolphin Max-Series™ →

★★★★☆ 4.4 (103)

$1079$1299

Save $220

Open Box $1059 Refurbished $999

View Cayman

Dolphin Cayman or Dolphin Oasis Z5i — which wins?

Our pick: the Dolphin Cayman

Diving into the Dolphin Oasis Z5i vs Dolphin Cayman, our pool experts weigh filtration, cleaning coverage, smart features, and value. For most pools, the Dolphin Cayman is the robot we recommend — and right now you save $220.

More ways to save on the Cayman

Certified & warranty-backed

Save $20

Certified Open Box · $1059

Save $80

Certified Refurbished · $999

What Sets Them Apart

Key Differences

Oasis Z5i

Not Sold by Poolbots - Maytronics sells the Oasis Z5i directly and through its dealers

Cayman

Best Pool Robot Under $1,500 with NanoFilter™ capability, Weekly Timer, HyperBrush, and Wall Climbing.
MaxBin™ is larger and easier to clean than filter cartridges
Wall Climbing - Complete floor and wall coverage
FREE NanoFilters with purchase using code at checkout: DEEPCLEAN23
Weekly Timer - Schedule the robot to automatically clean
HyperBrush - Scrubs 2X the speed of standard Dolphin robots

Side by Side

Feature Comparison

The features that matter most when comparing the Dolphin Oasis Z5i and Dolphin Cayman.

Feature	Oasis Z5i	CaymanOur Pick
Standard Filter
NanoFilters™		Optional
Multi-Media™
Oversized Leaf Bag
Wall Climbing
Waterline Cleaning
Hands-Off Weekly Timer
Hands-Off Daily Cleaning	✓ No manual recharge	✓ No manual recharge
Smartphone App Control
Full Filter Indicator
Gyroscope Navigation
Dual Stabilizer
Anti-Tangle Swivel
3-Year Warranty

Explained

Compare Features in Detail

NanoFilters™

Often overlooked, a NanoFilter™ can be the most important part of a pool robot. Without it, microscopic particulate — fine dust, pollen, and algae — passes right through the standard filters found on most robots. These ultra-fine filters trap that debris for a noticeably cleaner, healthier pool. On some models NanoFilters are included; on others (like the Escape and Cayman) they're an inexpensive optional add-on. Learn more ›

Dolphin Oasis Z5i does not

Optional Dolphin Cayman optional upgrade

Hands-Off Weekly Timer

An automatic pool cleaner should be automatic. A true weekly timer runs a complete pool-cleaning cycle on schedule — every day, every other day, or a few times a week — without you retrieving or recharging the robot between cycles.

Dolphin Oasis Z5i includes this

Dolphin Cayman includes this

Smartphone App Control

App connectivity can put scheduling, cycle selection and cleaner status on your phone, although the exact controls vary by model.

Dolphin Oasis Z5i includes this

Dolphin Cayman does not

Anti-Tangle Cable Swivel

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 ›

Dolphin Oasis Z5i includes this

Dolphin Cayman does not

Warranty Coverage

A robot is only as good as its warranty. The Dolphin Oasis Z5i is backed by a 3-year warranty, while the Dolphin Cayman carries a 2-year warranty. Buying through an Authorized Dealer like Poolbots gets you the full manufacturer warranty — never pro-rated or limited by cleaning cycles — plus a 30-day in-pool trial with no restocking fees. Learn more ›

Dolphin Oasis Z5i 3-year warranty

Dolphin Cayman 2-year warranty

Watch

Videos

See the Dolphin Oasis Z5i and Dolphin Cayman in action.

The Details

Specifications

	Oasis Z5i	Cayman
Part Number	99991079-USI	99996135-SPL
Waterline Cleaning	Yes	No
Multi-Media®	No	No
Filters Included	Ultra-Fine Filter Kit	1
Filter Cleaning	Top Access	MaxBin
Cleaning Coverage	Floor, Walls and Waterline	Floor, Walls
Cleaning Cycle	2.5 hours	1.5 hours
Number of Brushes	2	1
Cable Length	—	50 ft
Anti-Tangle Swivel	Yes	No
Pool Types	In Ground	In Ground & Above Ground
Maximum Pool Size	50 ft	33 ft
Pool Shape	Rectangle, Round, Freeform, or Kidney	Rectangle, Oval, or Freeform
Obstacles	—	Steps, Ladder, Drain Cover, Ledges, Pop-Ups
Surface	—	Concrete, Plaster, Gunite, Pebble, Tile, Vinyl Liner, Fiberglass
Media-Alert®	No	No
Hands-Off Weekly Timer	Yes	Yes
Daily Recharging Required	No	No
Smartphone App	Yes	No
Remote Operation	No	No
Restocking Fee	—	No
Warranty	3 Years	2 Years