Trésor Omega Co‑Axial Master Chronometer 40 mm
Sedna™ gold on leather strap
Characterised by its thin and elegant case, the Trésor line was first launched by OMEGA in 1949 and housed the legendary 30mm calibre. More than half a century later, it continues to impress with one of today’s most advanced mechanical movements.
This model has a 40 mm case in 18K Sedna™ gold, which is presented on a grey leather strap. The domed grey enamel dial has been achieved with a Grand Feu technique and includes enamel prints, as well as hands and indexes in 18K Sedna™ gold.
Inside, this De Ville Trésor is powered by the OMEGA Master Co-Axial Calibre 8929 and is certified as a Master Chronometer at the industry’s highest standard of precision, chronometric performance and magnetic resistance.
The movement is unaffected by exposure to strong magnetic fields, even those greater than 1.5 tesla (15,000 gauss).
Label given to a watch which has undergone precision tests and received a certificate from an official body (COSC).
Master Chronometer CertifiedGuaranteeing the Swiss industry’s highest standard of precision, performance and magnetic-resistance, as set by the Swiss Federal Institute of Metrology (METAS).
Transparent case backA transparent case back - frequently made of sapphire - makes it possible to see the movement inside the watch.
- Between lugs: 20 mm
- Bracelet: leather strap
- Case: Sedna™ gold
- Case diameter: 40 mm
- Dial colour: Grey
- Crystal: Scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
- Water resistance: 3 bar (30 metres / 100 feet)
OMEGA is proud to include the Swiss Made mark on all of its watches. This simple wording guarantees a standard of quality that has been established over many centuries and is today a world-renowned symbol of excellence.
Every part of an OMEGA watch is made in Switzerland, which goes far beyond the industry’s required standard. This means that the manufacturing levels as well as the aesthetic and technical levels meet Switzerland’s highest demands.
On top of OMEGA’s own proven excellence, the Swiss Made mark provides customers with even more assurance and trust in the watch they wear on their wrist.
All OMEGA watches are delivered with a 5-year warranty that covers the repair of any material or manufacturing defects. Please refer to the operating instructions for specific information about the warranty conditions and restrictions.
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Free Delivery and Returns
Free UK Delivery
• Delivered in 2-5 working days (excludes weekend delivery).
• A signature will be required on delivery for all orders.
• Our UK delivery service is operated by DHL.
Free UK Returns
For more information please see our Delivery & Returns Policy.
Movement CALIBRE OMEGA 8929
Manual-winding movement with Co-Axial escapement. Certified Master Chronometer, approved by METAS, resistant to magnetic fields reaching 15,000 gauss. Free-sprung balance with silicon balance spring, two barrels mounted in series. Time zone function. Special luxury finish with 18K Sedna™ gold balance bridge with Geneva waves in arabesque.
- 72 hours Power reserve
Product view from different angles
Variations of TRÉSOR Omega Co‑Axial Master Chronometer 40 mm
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