Ocean Crawler Decompression Timer Core Diver
Starting from 860 €The Ocean Crawler Decompression Timer is a technical dive watch from an American micro-brand based in Charlotte, North Carolina. Drawing on the decompression dials of 1950s and 1960s divers, it turns its display into a genuine decompression table, readable at a glance underwater. Part of the Core Diver collection, it offers 600 metres of water resistance, an automatic helium escape valve and a bezel made entirely of sapphire. Available in four versions, each limited to one hundred numbered pieces, it is aimed at scuba divers, spearfishers and collectors drawn to rare instruments. Its regulated Swiss calibre and one-piece assembly round out a firmly utilitarian positioning.
Ocean Crawler Decompression Timer dive watch
Ocean Crawler is an American micro-brand based in Charlotte, North Carolina. Its approach can be summed up in a few words: short production runs, Swiss automatic movements and assembly carried out in the United States, with each watch built from start to finish by a single watchmaker, then regulated, pressure tested and inspected before shipping. This artisanal set-up explains the brand's particular standing among affordable divers: it is not chasing volume but credibility underwater, and it backs its entire output with a five-year warranty.
The Decompression Timer belongs to the Core Diver collection, the house's reference diver. It is the most serious technical base in the catalogue, with its 44mm steel case, 600 metres of water resistance, automatic helium escape valve and unidirectional bezel made entirely of sapphire. Onto this proven architecture, the brand has grafted a dial that gives the model its whole character.
That dial revives a principle born with 1950s and 1960s divers: a decompression table printed directly onto the disc. Four concentric rings correspond to depths of 25, 30, 35 and 40 metres, or 85, 100, 115 and 135 feet. The diver reads off the decompression stop required by their immersion time, then times it using the bezel. The instrument thus retains a genuine backup function alongside the dive computer, while committing to a highly distinctive aesthetic.
Technical specifications Ocean Crawler Decompression Timer Core Diver
- Brand: Ocean Crawler
- Model: Decompression Timer (Core Diver)
- Indicative price: From €860
- Movement: Regulated Swiss automatic
- Power reserve: 40 hours
- Calibre: Sellita SW200-1 (Swiss Made)
- Diameter: 44 mm
- Thickness: 15.6 mm
- Water resistance: 600 m / 60 ATM
- Materials: Brushed or DLC 316L stainless steel
- Crystal: Sapphire with anti-reflective coating
- Dial: Black, blue or yellow
- Strap: Bracelet, rubber
- Warranty: 5 years
- Box contents: Numbered watch, box and papers
The Ocean Crawler Decompression Timer dive watch
Designed for scuba diving, spearfishing and deep exploration, the Decompression Timer takes up the architecture of the Core Diver, Ocean Crawler's reference diver. Its brushed 316L stainless steel case measures 44mm in diameter excluding the crown for 15.6mm of thickness, generous proportions that announce the instrument's deep-diving vocation straight away. The 50mm lug-to-lug and 22mm lug width confirm this substantial footprint, better suited to a wetsuit than a shirt cuff. The dial is protected by a 4.0mm sapphire crystal with anti-reflective coating, an unusually thick glass that directly answers the stated pressure rating and limits glare underwater.
The rotating bezel, unidirectional with 120 clicks, is also made entirely of sapphire: its markers are filled with Swiss Super-LumiNova C3, keeping it legible in dark water while giving it an unusual visual depth at this price point. Mechanically, the watch runs on the Swiss-made Sellita SW200-1 calibre, regulated by the brand before delivery. Being automatic, it needs no battery and winds itself with the motion of the wrist. The whole watch is assembled and pressure tested in the United States, in keeping with the artisanal approach claimed by this North Carolina micro-brand, which only produces small numbered batches.
A decompression table dial in four versions
The piece's originality lies in its dial, designed as a printed decompression table. Four concentric rings each correspond to a depth, 25, 30, 35 or 40 metres, or 85, 100, 115 or 135 feet, with the scale repeated at 12 o'clock. The diver selects the ring for their depth, reads off the decompression stop required by their immersion time, then times that stop with the bezel by aligning the desired figure with the minute hand. Seven layers of Super-LumiNova C3 keep the key elements readable at night, and a date window completes the display.
Water resistance reaches 600 metres, or 60 ATM, assisted by an automatic helium escape valve at 9 o'clock. The watch comes in four variants, each limited to 100 numbered pieces. The black dial and blue dial versions sit on a brushed steel case delivered on shark mesh bracelet; the black DLC variant uses the same bracelet in a black finish; the yellow dial version, the most affordable of the four, swaps the mesh for two fitted rubber straps. The choice therefore comes down to colour, case finish and strap allocation, with the technical base remaining strictly identical across versions. This deliberate rarity makes the Decompression Timer as much a collector's piece as a diving tool.
Ocean Crawler Decompression Timer dive watch: decompression on your wrist
The Ocean Crawler Decompression Timer combines a 44mm 316L steel case, 600 metres of water resistance and an automatic helium escape valve at 9 o'clock. Its dial works as a four-ring decompression table, from 25 to 40 metres, while the unidirectional sapphire bezel with 120 clicks is used to time decompression. The Swiss Sellita SW200-1 calibre, regulated by the brand, offers 40 hours of power reserve, and the sapphire crystal reaches 4 millimetres. Four versions exist, each limited to one hundred numbered pieces, delivered on shark mesh bracelet or rubber straps, with a five-year warranty.
Movement
The Decompression Timer is powered by the Sellita SW200-1 calibre, a Swiss automatic movement that Ocean Crawler regulates before shipping to improve accuracy. It beats at 28,800 vibrations per hour, a rate that favours stable timekeeping both underwater and day to day. Its 40-hour power reserve allows the watch to sit overnight without needing to be reset. Winding happens through the motion of the wrist, with no battery or electronic servicing involved, and the display includes a date window alongside the three hands.
Diameter and materials
The 316L stainless steel case measures 44mm in diameter excluding the crown, with a thickness of 15.6mm and a 50mm lug-to-lug. The DLC version receives a black coating, while the other three keep a restrained matte brushed finish. The 4.0mm sapphire crystal carries an anti-reflective coating, and the bezel itself is made of sapphire, a rare material at this price point for a piece intended for salt water. The dial comes in black, blue or yellow depending on the version chosen.
Water resistance
Rated at 600 metres, or 60 ATM, the water resistance places the Decompression Timer among deep divers. An automatic helium escape valve at 9 o'clock releases gas built up during ascents, and each piece is pressure tested before shipping. The unidirectional bezel with 120 clicks, made entirely of sapphire, secures the timing of decompression stops, while seven layers of Super-LumiNova C3 keep it legible in dark water. The 4mm sapphire crystal rounds out a construction clearly built for depth.
Accessories
The brushed steel and black DLC versions come on a shark mesh bracelet closed by a ratcheting deployant clasp, handy for fitting the watch over a wetsuit. The yellow version is the exception: it arrives with two fitted rubber straps, with no metal bracelet. The 22mm lug width then leaves the field open to aftermarket straps. The case, numbered out of one hundred pieces, is supplied with its box and papers from the authorised European dealer.
Warranty
Ocean Crawler covers each of its watches with a 5-year manufacturer's warranty, covering material and manufacturing defects. This is an unusually long span for a micro-brand, consistent with the unit-by-unit inspection carried out before shipping, with every piece pressure tested. An optional 10-year extension is also available: it includes two movement services as well as a pressure test and reseal every three years, useful for an instrument genuinely used underwater.
Ocean Crawler Decompression Timer The pros
and cons
- Genuine 600 metre water resistance
- Functional decompression timer dial
- Regulated Swiss Sellita SW200-1 calibre
- Built-in automatic helium escape valve
- Four limited versions
- Imposing 44mm case
- 50mm lug-to-lug, slim wrists
- Busy dial, less immediate reading
- Power reserve limited to 40 hours
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Prices and technical specifications are subject to change. Content and photos are not contractual.
