OLLECH & WAJS OW Astrochron

The OLLECH & WAJS OW Astrochron is a chronograph of extraordinary quality, worthy of continuing the Astrochron's legacy today, and we have striven to ensure that this new interpretation rises to the challenge. With a water-resistance of 50 ATM (500 m), the new model far exceeds the original's deep-diving capability and exceeds the Swiss chronometer standard.

OLLECH & WAJS OW Astrochron in detail

Further updates include a 360-degree rotating compass bezel and a 20-minute dive scale. These additional functions, combined with a five-minute regatta counter, extra-thick sapphire crystal, and a unique four-gasket pusher system, make the new OW Astrochron equally competent above and below the water.

Inside the brushed 316L stainless steel case is a successor to the historic Valjoux 72 movement that powered the first Astrochrons. In our workshop in the Swiss Jura, a custom-engraved automatic Valjoux 7753 - with an OW-made rotor - is regulated, adjusted, and power reserve tested in five positions, thereby earning its OW precision rating.

As a final homage to its predecessor, the new chronograph revives the striking North Atlantic blue dial of 1968.

The OW Astrochron S is presented on the OW S-Type Mark II bracelet, inspired by those found on many Ollech & Wajs models of the 1960s. The links are individually crafted from a solid block of 316L stainless steel, before being carefully brushed, assembled, and screwed by hand. This process prevents the usual stretching common to pressed-steel bracelets, ensuring both longevity and comfort for the wearer. The bracelet's double safety folding clasp prevents accidental opening.

The OW Astrochron also comes with a hand-made Perlon regatta strap, ideal for summer activities. Woven exclusively for OW - from premium-grade, lightweight and highly water, salt, and oil-resistant braided nylon - the regatta strap offers a pleasant blend of comfort and durability. The distinctive two-tone pattern echoes the Astrochron's dial colours, and those familiar with the international maritime signal flag system may also recognise the nautical code for J - Juliet. The strap is finished with a brushed stainless steel buckle, signed with "OWZ 1956". Combined with the Astrochron's extreme 500m deep-diving capability, this seafaring complement is ready for any challenge – in, on, or around the ocean.

Whether you are exploring a wreck, investigating a theory, or simply gazing at the stars and discovering new possibilities, the new OW Astrochron could be the perfect all-round chronograph.

Specifications 

Dimensions: 39.5 mm x 16.8 mm

Case: Brushed 316L stainless steel, screw-down case back, screw-down crown, double pushers with 4 gaskets. Date setting via special diver pusher at 10 o'clock. Rotating 360-degree compass bezel with cardinal direction markings and an angular scale / bi-directional 60-minute bezel with 20-minute dive scale. Made in Jura, Switzerland.

Crystal: Semi-domed sapphire crystal with anti-reflective treatment

Dial: Hands and indices with Super-LumiNova®. One seconds register, one 12-hour totaliser and one 30-minute totaliser with integrated regatta counter.

Water resistance: 500m / 50 atm

Movement: Automatic Valjoux 7753 OW PRECISION movement with 5 positions, 27 jewels. 28,800 vibrations per hour, with a power reserve of +/- 54 h. Main plate engraved Ollech & Wajs Zürich 1956 and OW rotor

S-Bracelet: 20 mm OW S-Type Mark II in 316L stainless steel with double folding clasp

Perlon Strap: 20 mm hand-made, high-quality Perlon strap 'Regatta', woven in Slovenia, hand-finished in Switzerland, with a brushed stainless steel buckle, signed 'OWZ 1956'.

Origin: Hand-made in the Swiss Jura