Ocean Crawler Decompression Timer Core Diver - Black — 44mm Automatic Dive Watch
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The watch
The Ocean Crawler Decompression Timer Core Diver - Black is a 44mm dive watch with a black dial, powered by a Swiss automatic Sellita SW200-1 movement. Expect 600m water resistance and a sapphire crystal. It belongs to Hour IV, Dive, in our Expedition season: a natural choice for swimming, sailing and beach travel.
The Black 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 black 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 Decompression Timer Core Diver - Black DLC. 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 shark-mesh bracelet to a dental conference with a charcoal suit. Even at 15.6mm thick, the rounded bezel edge lets my dress shirt cuff slide past it, and the dial gets plenty of second looks.
The colored decompression rings pop way more in coastal sunlight than in the studio photos. Been wearing it to dinner and on the firehouse off-days, and it sits great on my 7-inch wrist.
Hi Vincent, thank you for your service at the firehouse! Glad the Decompression Timer is getting plenty of wrist time.
The black base dial with colorful decompression rings makes strap matching fun. I wear it on the stock shark-mesh bracelet for court days in Massachusetts, then swap to the included rubber strap or a yellow FKM band on weekends.
I have always wanted a vintage decompression diver, but I prefer modern 600m water resistance and a reliable Sellita SW200-1 caliber. At 44mm wide and 15.6mm thick, the short lug-to-lug keeps the case centered on my wrist. The 4.0mm anti-reflective sapphire crystal and 120-click C3 lumed sapphire bezel are top tier, with zero backplay. Over two weeks of flying trips, accuracy has stayed at +2 seconds per day.
I wear suits and blazers to school board meetings, and the black dial with the subtle decompression color rings adds a bit of personality without looking loud. Fits my wrist comfortably on the mesh bracelet.
Sized the 22mm shark-mesh bracelet for my wrist in ten minutes, and it gives the Decompression Timer a heavy retro look. Swapping to the included rubber strap or a grey NATO brings out the colors on the dial.
After twenty-two years in the Air Force, I am a sucker for busy technical dials that look like flight instruments. The concentric decompression rings against the matte black face give me that exact vibe, and the Sellita SW200-1 keeps spot-on time.
The 44mm by 15.6mm 316L steel case is solidly built, with a flush helium escape valve and clean brushing. Printing on the black decompression scale is razor-sharp under the 4.0mm AR sapphire crystal, and the 120-click bezel locks in tightly.
Hi Austin, thanks for the review! Glad the crisp dial printing and 600m case construction hit the mark for you.
