Technical Archive

Omega
Constellation 1847.70.34

Omega Constellation 1847.70.34: strap made to measure on the watch at the Casati Milano atelier, by appointment.

Constellation Quadra Quartz 28 Chronograph Stainless Steel / Diamond / Pink MOP/ Alligator

Technical Specifications

Omega 1847.70.34
Reference

1847.70.34

Movement

Omega caliber 5200 Small Seconds, Hours, Minutes | Chronograph

The Heritage

The Omega Constellation ref. 1847.70.34 is a 28mm stainless steel chronograph from the iconic collection born in 1952. It features the characteristic integrated bracelet and distinctive grip claws on the case, representing Swiss elegance and precision. Custom strap work is required for the Constellation's proprietary integrated attachment, crafted by Atelier Casati Milano using premium Mississippi alligator or Barenia leather.
Made to Measure

The strap for this watch is made to measure

On the Omega Constellation the bracelet is drawn as part of the case: no catalogue strap will fit. In the atelier we take the measurements on the watch itself and build the strap on the piece — that is the work of Casati Milano.

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FAQ

Can I fit a standard strap on the Omega Constellation 1847.70.34?

No, the bracelet is integrated into the case. The attachment is proprietary: a standard strap won't fit. But I build one bespoke in the atelier, shaped directly onto your case.

How does the bespoke strap process work for this Constellation?

You visit <a href="/pages/casati-booking">Casati Milano</a>, by appointment. I take measurements and references straight from the case, millimetre by millimetre. The strap is then crafted—designed only for your watch.

Which leather do you recommend for the Constellation?

I prefer Mississippi Alligator if you want it dress, elegant even by day. But if you're after something that ages well and patinas over time, Barenia is my choice: this Constellation speaks of refined sportiness, and Barenia tells that story.

How long does a well-made strap last?

It depends on use and care. Kept well, one lasts 4-5 years before wearing out. If you treat it with respect—don't bend it, dry it when wet—the leather ages better and longer. And the older it gets, the more character it gains.

Does the 1847.70.34 have a chronometer movement?

It was born in 1952 as a manifesto of Swiss precision. This 28mm model honours that legacy: a reliable tool, not an ornament. Those who choose it know they want something that works, and something that has breathed sixty years of history without losing its way.

The next step

The right strap isn’t chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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By appointment only · Milan

The atelier's website: casatimilano.com