Only a chronograph of outstanding quality would be worthy of continuing the Astrochron legacy today, and we have endeavoured to ensure this new interpretation is equal to the challenge. With a water resistance of 50ATM (500 m), the new model more than doubles the depth rating of the original and far exceeds the 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. At our workshop in the Swiss Jura, a custom-engraved automatic Valjoux 7753 – with an OW-machined rotor set onto it – is regulated, adjusted and power-tested in five positions, thereby qualifying it for the OW Precision rating.

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

The OW Astrochron comes on a hand-crafted Perlon Regatta band, ideal for summer recreation. Woven exclusively for OW – using premium-quality; lightweight; and highly water-, saline- and oil-resistant braided nylon – the Regatta band offers a tactile blend of comfort and durability. The striking two-tone pattern echoes the dial colours of the Astrochron, and those familiar with the international maritime signal flag system may also recognise the nautical code for J – Juliet. The band is finished with a brushed stainless steel thorn buckle, signed ‘OWZ 1956’. Combined with the Astrochron’s extreme 500 m depth rating, this seafaring complement is equal to any challenge – in, on or around the ocean.

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