Ocean Crawler Core Diver - Whitewater Sentinel — 44mm Automatic Dive Watch
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The watch
Built around a whitewater sentinel dial, the Ocean Crawler Core Diver - Whitewater Sentinel pairs a 44mm case with 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 travel days near the water.
The Whitewater Sentinel 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 whitewater sentinel 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 - Rubellite Edition, 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
Ordering a thousand-dollar watch from a microbrand online made me nervous at first, but the Whitewater Sentinel won me over in five seconds. The solid shark-mesh bracelet, thick sapphire crystal, and crisp brushing on the 316L case are top notch.
Picked up the Whitewater Sentinel to add a polar-style 600m diver to my collection. The matte white dial against the 4.0mm anti-reflective sapphire gives great depth, and the 120-click sapphire bezel ratchets with a solid, mechanical snap. With the helium escape valve at 9 o'clock and the heavy shark-mesh bracelet, it feels substantial on my wrist. The Sellita SW200-1 caliber is running +3 seconds a day.
I have six Swiss divers in my watch box, and the case work on the Whitewater Sentinel holds its own easily. At 44mm by 15.6mm, the downturned lugs hug my wrist without overhang. The 4.0mm AR-coated sapphire crystal and C3 lumed sapphire bezel insert are crystal clear, with zero backplay across all 120 clicks. My Sellita SW200-1 has settled at +1.5 seconds per day on the wrist.
Bought this for my son when he graduated college and started his diving charter job. He was blown away by the 600m spec and the bright C3 lume. He did say the watch has some real heft to it that took a couple days to get used to.
I spend my weekends at Summit Point Raceway and love crisp white instrument gauges. This Whitewater Sentinel has that same high-contrast legibility when timing sessions with the 120-click bezel. The Sellita rotor has a slight audible whir in a dead-quiet room, which is normal for this movement.
Hi Brock, Summit Point is a great track! Glad the Whitewater Sentinel is serving you well in the paddock, and you're spot on about the ball-bearing rotor on the SW200-1.
Picked this up for my younger brother's 30th birthday last month. He loves white-dial sport watches and was thrilled with the heavy shark-mesh bracelet and extra rubber strap. He mentioned the clasp doesn't have half-links so the fit is slightly snug in humid weather.
Took this out kayaking on the Delaware and swimming down at the Jersey Shore. The 600m rating, screw-down crown, and C3 Super-LumiNova on the bezel give me total confidence in the water, and the white dial is easy to read through polarized sunglasses.
Hi Brent, readability through polarized sunglasses out on the water is a huge plus with that crisp white dial! Enjoy the summer on the shore.
With a clean white dial, the Whitewater Sentinel works on any 22mm strap you throw at it. I sized the shark-mesh bracelet for my wrist for weekday wear, then swapped onto the included rubber strap and an orange FKM band for the weekend.
Measured the 316L case at 44mm diameter and 15.6mm height. The 120-click sapphire bezel aligns cleanly at twelve, the helium escape valve sits flush, and the black hands against the Whitewater Sentinel dial offer high-contrast legibility. Running +2 seconds per day.
