Ocean Crawler Core Diver - Rubellite Edition — 44mm Automatic Dive Watch
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The watch
Built around a rubellite dial, the Ocean Crawler Core Diver - Rubellite Edition pairs a 44mm case with a Swiss automatic Sellita SW200-1 movement. It brings 600m water resistance and a sapphire crystal. We place it at Hour IV (Dive) of the Expedition season, for travel days near the water.
The Rubellite dial sets the tone, framed by a sapphire unidirectional rotating bezel and set into a 44mm case in 316L stainless steel. At 44mm across, 15.6mm thick and 50mm lug-to-lug, it wears with real presence on the wrist.
Inside beats a Swiss-made Sellita SW200-1 automatic, running at 28,800 vph with roughly a 40-hour power reserve. It winds itself from the motion of your wrist — no battery, just a mechanical heart that has been individually regulated for accuracy.
Every Ocean Crawler is pressure-tested in water, and this one is rated to 600 metres (60 ATM). That is genuine capability for recreational and technical scuba diving, freediving and spearfishing. A helium escape valve lets it handle saturation diving and decompression chambers. The unidirectional bezel and bright Super-LumiNova keep elapsed-time tracking clear even in dark water.
It is made for divers and enthusiasts who want a serious tool watch with genuine depth rating, Swiss-grade mechanics and a design that still turns heads above the surface.
New, boxed and warrantied — free US shipping.
Good to know
A Swiss-made Sellita SW200-1 automatic running at 28,800 vibrations per hour with about a 40-hour power reserve. It is self-winding, so there is no battery to replace.
It is rated to 600 metres (60 ATM) and pressure-tested, so it is suitable for recreational and technical scuba diving, freediving and spearfishing. Have the gaskets checked periodically to keep that rating.
The case measures 44mm (15.6mm thick, 22mm lug width) — a bold size that suits larger wrists (roughly 17.5 cm / 6.9 in and up). Our watch size guide (/pages/watch-size-guide) explains how to measure your wrist.
It has a rubellite dial, framed by a sapphire unidirectional rotating bezel, under an anti-reflective sapphire crystal.
It pairs 600 metres (60 ATM) of tested water resistance with a full sapphire bezel and sapphire crystal, a serious tool-watch build and Swiss Super-LumiNova, so it performs underwater and still looks refined on land.
The bezel and key dial markers carry Swiss Super-LumiNova, so elapsed-time tracking and reading the time stay clear in dark or murky water.
Yes. Other versions we carry include the Ocean Crawler Core Diver - Spring Time - Full Lume Orange, the Ocean Crawler Core Diver - Eclipse Carbon, the Ocean Crawler Core Diver - Whitewater Sentinel, the Ocean Crawler Core Diver - Blue/Orange DLC, the Ocean Crawler Core Diver - Blue/Orange. Availability changes with stock, so the collection page always shows what is in stock today.
On the ChronoSeasons dial it sits at Hour IV — Dive, part of the Expedition season, and suits swimming, sailing, beach travel and everyday wear.
From the journal
Owners say
Wore this on the rubber strap while fishing the flats around Tybee Island. The screw-down crown and 600m rating handle the salt water without issue, and the C3 Super-LumiNova is super bright at dawn. Date window is a little small without my reading glasses.
Hi Noah, great to hear the Rubellite is getting out on the water around Tybee Island! Appreciate the note on the date window size.
Took this out for a Sunday morning drive up the Merritt Parkway in my old 911. I usually wear racing chronographs, but the deep red Rubellite dial and crisp bezel action won me over. The clasp doesn't have half-links so the fit is slightly snug in humid weather.
Sized the 22mm shark-mesh bracelet for my 7.75-inch wrist in about ten minutes, and it gives the Rubellite dial a heavy vintage diver look. Swapping to the included rubber strap tones down the weight and makes the red stone pop even more.
Hi Ross, glad you're enjoying both strap options! The contrast between the black rubber and the deep red Rubellite stone is a favorite around our shop too.
Website photos cannot capture the natural veining in the Rubellite stone when you step outside. Been wearing it to dinner and weekend errands on my wrist, and it is surprisingly comfortable.
I fly bush planes up in Maine and love mechanical instruments with real presence. Even though my usual rotation is full of GMTs and aviation chronographs, the 120-click sapphire bezel on this Rubellite Core Diver is great for tracking fuel tank switches.
Hi Gary, using the sapphire dive bezel to time fuel tank switches up in Maine is awesome! Safe flying and enjoy the watch.
This Rubellite edition bridges the gap between a tough diver and a professional office piece for school board meetings. Fits my wrist nicely under a sport coat. The shipping carrier delayed the box by two days, though the watch itself is great.
Hi Spencer, sorry the carrier kept you waiting an extra two days! Glad the Rubellite Core Diver is working out so well for the office.
Case finishing, crown threading, and clasp lockup on the shark-mesh bracelet are all solid. The 4.0mm AR sapphire gives a clear view of the stone dial. Knocking one star because the shipping carrier delayed the box by two days, though the watch itself is great.
I wear navy and grey suits most days, and the deep crimson tone of the Rubellite dial adds just the right amount of character. On the shark-mesh bracelet, it has a dressed-up presence that works well with French cuffs.
The 44mm 316L steel case and 15.6mm height are machined to tight tolerances. The 120-click sapphire bezel ratchets cleanly, the helium escape valve is flush, and the Sellita SW200-1 has stayed within two seconds a day over three weeks.
