OW Ocean Graph MkII

The Ollech & Wajs highly respected ‘Precision’ line has long been chosen by those who dare to venture deeper for its uncompromising dedication to professional-grade extreme water resistance. The original 1968 Ocean Graph became popular among both enthusiasts and professional divers for its robustness, 1000m water resistance, and specialised decompression bezel. The MkII honours this legacy while embracing advancements in watchmaking that enhance precision, durability, and versatility for the competitive diver.

The MkII is the product of a rare collaboration between Ollech & Wajs and Siri Østvold, Norwegian freediver and ocean advocate. Her experience beneath the waves informed key elements of the watch’s usability and aesthetics. From the multifunction ‘Dive, GMT, Tide tracking & top time’ bezel to the legibility of the hands and markers, every detail was tested against the real-world challenges faced by divers.

Tide Tracking & Top Time bezel

The MkII features an innovative multifunction GMT, Tide Tracking, Top Time & Dive bezel. It combines four different timing systems into one rotating bezel and is the first of its kind.

Tide Tracking Function: By aligning the bezel with the time of the last high tide (often set against the hour hand), you can determine when the next high and low tides will occur. This is a handy feature for a variety of ocean sports such as surfing, sailing, fishing, and snorkelling.

Top Time (Countdown / Elapsed Time) Function: This utility has been developed specifically for competitive free-divers. “Top Time” is a term used to describe the three-minute countdown a diver has to psychologically and physically prepare for a competition dive. Once T-3:00 minutes has been called by the judge, the diver’s buddy (or the diver themselves in training) will align the bezel’s zero marker with the minute hand, and track elapsed time leading up to the dive.

GMT: A 12-hour GMT allows you to track two different time zones at once - ideal for those who travel to compete in the world’s oceans.

20-minute Dive scale: allows divers to record elapsed time precisely during the first 15–20 critical minutes of a dive.

The Ocean Graph MkII pairs rugged engineering with refined aesthetics. Its distinctive blue dial and orange accents ensure instant readability in low light, while the ultra-light perlon strap provides comfort and durability both above and below the surface. 

Three other straps can be purchased as accessories:

The OW S-type Mark II beads-of-rice, stainless steel bracelet, inspired by those found on past Ollech & Wajs models of the 1960s Precision line, including the original Ocean Graph. Its links are individually machined in a solid block of 316L stainless steel, before being carefully brushed, assembled and screwed by hand. This process prevents the usual stretching common among pressed steel bracelets, ensuring both longevity and comfort to the wearer. The bracelet’s double-lock deployant clasp prevents accidental opening while remaining easy to handle for divers.

The inimitable orange rubber 'FROGMAN' Expedition strap. Made from premium-quality, toxin-free rubber it is soft to the touch and adheres perfectly to the wrist. Its insulative properties help it remain flexible at low temperatures, ensuring comfort during cold-water diving. It is also abrasion-, distortion-, heat- and oil-resistant. Embossed onto the smooth, matt-black outer surface is a centimetres and inches rule and a 1:25000 cartographic scale. On the reverse is the Morse code alphabet and a metres, yards and feet conversion table. Manufactured by an artisanal Italian rubber specialist, with 40 years’ experience in strap development; and hand-finished in Switzerland; it with two brushed stainless steel keepers and a thorn buckle, signed ‘OWZ 1956’. This strap does more than just hold your watch in place — it helps you calculate, translate and navigate.

Then there is the M-Heritage bracelet a 20 mm medium gauge, stainless steel mesh bracelet, hand-brushed, reinforced ends, with an OW-engraved thorn buckle.

Year
2025

Dimensions
39.5 mm × 15.8 mm

Case
Brushed 316L stainless steel, screwed back, screw-down crown, rotating Tide Tracking & Top Time, GMT and dive bezel. Origin, manufactured in Jura, Switzerland

Glass
Sapphire with anti-glare treatment

Dial
Hands and indexes in pale green and cream Super-LumiNova®

Water resistance
1000m/ 100atm

Movement
Automatic, bespoke Soprod Newton Precision P092; date-only calendar, with semi-instantaneous changes and quick adjustment using the crown; stop seconds; 4Hz 28,800 vibrations per hour; 23 jewels; 44-hour power reserve. The Soprod Newton P092 movement is independently tested for dependability and durability at the internationally renowned Laboratoire Dubois in Chaux-de-Fonds, Switzerland, and has been awarded a Chronofiable® certification. COSC Certification available as an option.

Average Accuracy
+/-5 seconds per day, adjusted in five positions. (COSC version average accuracy +/-  in accordance with COSC tolerances)

Blue Perlon RAF style band
20 mm hand-crafted, premium-quality Perlon one-piece band, woven for OW in Slovenia, hand-finished in Switzerland; with a brushed stainless steel thorn buckle, signed ‘OWZ 1956’

S Type Mark II bracelet
20 mm 316L stainless steel, beads-of-rice OW S-type Mark II, with double-lock deployant clasp (Available as an add on 256 CHF)

M-Heritage bracelet 
20 mm medium gauge, stainless steel mesh bracelet, hand-brushed, reinforced ends, with an OW-engraved thorn buckle (Available as an add on 126 CHF)

Rubber 'FROGMAN' Expedition strap
20 mm abrasion-, distortion-, heat- and oil-resistant, toxin-free rubber strap. Embossed centimetres and inches rule and 1:25000 cartographic scale. Morse code alphabet and a metres, yards and feet conversion table. Manufactured by Italian rubber specialist and hand-finished in Switzerland, with two brushed stainless steel keepers and a thorn buckle, signed ‘OWZ 1956’. (Available as an add on 116 CHF)

Origin
Handmade in the Swiss Jura

Free shipping by FedEx, which includes all import taxes, customs duties, customs clearance fees, VAT and handling fees.

For shipment to countries beyond  the European Community, Great Britain, Canada and the United States,  where the prepaid tax service cannot  always be offered, we offer our customers the  benefit of a special rebate,  via a 15% discount, corresponding to the average import duty and tax percentages in the countries listed above. This amount will serve as compensation for any such charges by local tax authorities.

Please note that the stainless steel bracelet should always be adjusted by a competent watchmaker.