OW Astrochron S

SFr. 2,496.00

The OW Astrochron story began in Zürich nearly 60 years ago, amidst history’s most ambitious era of exploration. The race to go faster, further and deeper had the world poised at the edge of several new frontiers, the most notable being outer space. The astral realm represented the ultimate in exploration and inspired the name of the famous Ollech & Wajs 1967 ‘triple-register’ chronograph. Indeed, NASA’s most prestigious scientists would be amongst the elite professionals that used the Astrochron’s various dials and scales. Engineers, sportsmen, commercial and military divers, pilots and ships officers were also fast to appreciate the value of such a rugged and water-resistant precision timing instrument.

Only a chronograph of outstanding quality would be worthy of continuing the Astrochron legacy today, and we had endeavoured to ensure this new interpretation is equal to the challenge. With a water-resistance of 50 atm (500 m), the new model more than doubles the depth rating of the original and far exceeds Swiss chronograph standard. Other updates include a 360-degree rotating compass bezel and a 20 minute diver’s scale. These additional utilities, combined with a five-minute Regatta counter, extra-thick sapphire crystal and unique four-gasket pusher system, make the new OW Astrochron as proficient on the ocean as it is under and over it.

Inside the brushed 316L stainless steel case is a descendant of the historic Valjoux 72 movement that powered the first Astrochrons. A custom-engraved automatic Valjoux 7753, with an OW machined rotor set onto it, is regulated, adjusted and power-tested in five positions at our workshop in the Swiss Jura, thereby qualifying for the OW Precision rating.

As a final tribute to its forebear, the new chronograph revives the distinctive North Atlantic blue dial of 1968.

Whether you’re exploring a wreck, exploring a theory or just gazing up at the stars and exploring the possibilities, the new OW Astrochron could well be the perfect chronograph.

As has become a new OW tradition, the first 56 Astrochron S watches will be offered with numbered crowns.



39.56 mm X 16.8 mm

Brushed 316L stainless steel, screwed back, screw-down crown, twin pushers with 4 gaskets. Date adjusted by special diving pusher at 10 o’clock. Rotating 360-degree compass bezel with cardinal direction markers and an angle scale / two tone 60 mn bezel with 20 mn diver’s scale. Manufactured in Jura, Switzerland.

Semi-domed sapphire with anti-glare treatment

Hands and indexes in Super-LumiNova® A seconds register, a 12 hour totalizer, and 30 minute totalizer incorporating a Regatta counter.

Water resistance
500m/ 50 atm

Automatic Valjoux 7753 OW PRECISION 5 position adjusted, 27 Jewels. 28,800 bph, with a power reserve of +/- 54 h. Mainplate engraved Ollech & Wajs Zurich 1956, and OW machined rotor

Swiss Made*

20mm 316L stainless steel beads of rice, OW S-Type Mark II


Currently awaiting stock, available late October 2023


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


3 years against any manufacturing defect.



*Please note that the Swiss Made percentage is calculated accordingto Swiss regulations and may vary depending on the exact configuration of the watch. This percentage does not include bracelets or accessories.


Designed in Zurich and individually assembled and adjusted by hand in Haute-Sorne, in the Swiss Jura.


In keeping with the traditions of Ollech & Wajs every watch undergoes more than a dozen operations and is inspected at regular stages of assembly. A rigorous multi step quality control process to ensure that it is perfectly finished.


Our watches are powered by independently tested movements from respected manufacturers -  ETA 2824/2, Valjoux 7753 and Soprod Newton P092