Dolphin Open Box Nautilus CC Plus IOT review

This source-based assessment covers the U.S. open-box listing with Product No. 66666409-PCI, not a hands-on test. It is a particular corded Nautilus CC Plus configuration, not a generic review of every CC Plus package.

Which configuration is actually listed

Maytronics identifies this product as “Dolphin Open Box Nautilus CC Plus IOT” and assigns it Product No. 66666409-PCI on the exact U.S. product page. That number matters: the site also lists other CC Plus and open-box cleaners under their own identifiers. A similar family name is not proof of an identical filter, carton, instruction set or service history.

The exact comparison row gives this listing a maximum pool length of 40 ft and cleaning coverage of floor and walls. Treat that figure as the manufacturer's pool-length screen, not as a measured cable length or assurance that a supply cord can reach around a particular deck. The page lists an anti-tangling swivel but no cable length. It does not list waterline scrubbing, steps, sun ledges or a supported minimum depth; those capabilities should not be inferred from the broad phrase “pool cleaning.”

Filter and app: two specific qualifications

The product page describes an easy-access, top-load fine filtration basket and lists a Fine Filter Kit as the main filter. Its separate “Additional Filter in the Box” field is a dash. So this is not a documented extra-filter bundle, and the page does not list an additional Ultra-Fine kit. That distinction can change a purchase if you are trying to separate fine debris from larger leaves without buying a different filter assembly later. Confirm the exact product number and carton contents before treating any separately advertised filter accessory as included.

There is a real filter distinction from the separately numbered Nautilus CC Plus w/Wi-Fi 99996409-PCI: that model's own page lists an Ultra-Fine Filter Kit as its main filter, while this open-box SKU lists Fine Filter Kit. Do not import the new model's filter grade into 66666409-PCI simply because the names are similar.

The open-box product page also names Wi-Fi and the MyDolphin Plus app, so app support is documented. Its headline copy uses scheduling language, but the comparison table does not spell out a weekly timer, delay option or exact command. The page-linked manual-selector query for this exact product number returned no matching document. I would therefore treat this as an app-enabled listing, not a proven schedule feature set; ask Maytronics about the exact functions and setup for this SKU if one command is essential.

What “open box” does—and does not—tell you

Maytronics' U.S. Open Box information describes the category as lightly used or returned in like-new condition and fully inspected and tested. It lists a robotic cleaner, power supply, filter(s), manual and a 12-month limited warranty as the general outlet package, and states a 14-day return policy. The same page cautions that accessories can vary by model or condition. Those are category-level terms, not a report on the particular unit you receive, proof of its cosmetic state, or an exact SKU-specific carton checklist. The product page separately lists a one-year warranty, consistent with the general term. Recheck the current product page, written offer, warranty card and return conditions before ordering.

The manufacturer image linked from the exact product page shows a Nautilus Plus cleaner body. It is a model image, not a photograph of an individual open-box unit, so it cannot establish wear, completeness or accessory condition.

Who should consider it

This listing is most straightforward for an owner whose pool is no longer than the stated 40-ft maximum, who needs floor and wall cleaning, is comfortable with a corded setup, and values documented MyDolphin Plus app availability. The fine-filter main kit may be suitable if that is the grade you intend to use, but a required extra Ultra-Fine kit is not supported by the exact listing. If you need waterline coverage or a pool rating above 40 ft, examine a different exact configuration; for example, the separately assessed Open Box Nautilus CC Pro IOT 66666207-PCI has its own page with different surface and length fields. That comparison is a reason to inspect the product number, not a suggestion to treat the two cleaners as interchangeable.

Likewise, someone who needs a precise weekly schedule, a measured cable reach, a caddy, or a particular step profile should pause. The product page does not answer those points, and the missing exact-number manual leaves the instructions bridge unresolved. A 40-ft pool rating cannot answer whether a cleaner can be safely routed, lifted, stored or used on every surface in an individual pool.

Questions to settle before choosing

• Does the seller and invoice identify 66666409-PCI, rather than the separately numbered Wi-Fi, standard, refurbished or other open-box CC Plus?
• Is the pool within the exact 40-ft pool-length rating, and has the seller or manufacturer confirmed cable reach, power-supply placement, pool shape and surface compatibility from the correct instructions?
• Is the Fine Filter Kit the only listed filter, or does the exact unit have an accessory you specifically need? The page's extra-filter field is blank; verify the actual carton instead of assuming an Ultra-Fine kit.
• Can Maytronics or the seller confirm the exact app functions, manual, condition report, warranty card, outlet return terms and any included caddy or stand?

Evidence and limits

The cited manufacturer page supports the SKU, stated pool length, floor-and-wall coverage, filter, Wi-Fi/app naming, swivel and one-year warranty. The manual selector did not return a product for this number, so cycle time, exact schedule behavior, cable measurement, operating depth, steps, pool classification, care instructions and caddy inclusion remain unknown here. A bounded search of a saved CPSC recall-list export found no exact string match for this SKU or model name; that is not a recall clearance or safety certification. This assessment describes the available record, not personal ownership, testing or a promise about a particular returned unit.