Chronoswiss

Opus Chronograph Titanium

Reference Number :

CH-7543T.1S-DGR

Series : Sirius

Retail: $16,830

(As of: 04/2025)

This watch is not for sale, this page is just for reference purposes only. If you would like to purchase this watch, please contact Chronoswiss. If you are interested in selling this watch to us, you can contact us here.

Quick TakeThis Opus Chronograph isn't just telling time; it's putting on a mechanical ballet right on your wrist, dressed in a seriously cool, lightweight titanium suit. Forget heavyweights; Grade 5 titanium makes this watch feel almost weightless, yet it's tough enough for daily life's adventures, right down to 100 meters underwater. The real star, though, is that skeletonized dial. Finished in a striking green CVD, it peels back the layers, letting you geek out over the automatic C. 741 S movement doing its intricate dance. Watching the gears turn, the rotor spin (that blue CVD finish!), and the chronograph hands sweep is pure horological theater. It’s got all the chrono functions you need – 30-minute and 12-hour counters, plus that handy date – all laid out clearly despite the openworked design. Paired with a rugged Cordura strap, it’s a fantastic mix of high-tech materials, traditional watchmaking artistry, and a bold, modern look that doesn't take itself too seriously.

DescriptionThe construction of reference CH-7543T.1S-DGR utilizes Titanium Grade 5 for the primary case material, resulting in a notably lightweight yet durable structure comprising 38 individual components. Its case dimensions are specified as 41 mm in diameter and 14.8 mm in height, providing substantial wrist presence. A distinctive finish is achieved through a combination of partly polished and partly satin-finished surfaces across the case structure. The bezel incorporates a polished, screw-down design featuring side knurling and a full thread, ensuring secure attachment and contributing to the overall aesthetic. Protecting the dial is a curved sapphire crystal treated with an anti-reflective coating to enhance legibility under various lighting conditions. The case back is engineered as a screw-down component, featuring a satin finish and an integrated sapphire crystal, permitting observation of the internal movement. Water resistance is rated at 10 bar, equivalent to a depth of 100 meters, suitable for surface water activities. The lug width accommodates a 21 mm band.

Powering the timepiece is the Caliber C. 741 S, an automatic mechanical movement characterized by its skeletonized architecture. This caliber operates at a frequency of 4 Hz, corresponding to 28,800 alternations per hour (A/h), and offers a power reserve of approximately 48 hours when fully wound. The movement incorporates 25 jewels to minimize friction at critical points. Intricate finishing techniques are evident throughout the caliber, including a skeletonized rotor plated with blue CVD and decorated with Côtes de Genève, mounted on a ball bearing for efficient winding. Further refinements include a polished pallet lever, escape wheel, and screws, alongside perlage applied to the bridges and base plate. The dial itself is skeletonized, treated with a Green CVD coating, and possesses a matt finish. Information is conveyed via central hour and minute hands, a small seconds sub-dial, a central chronograph seconds hand, a 30-minute counter, a 12-hour counter, and an analog date display. The hands are rhodium-plated, styled in the "Breguet Losange" shape, and feature Super-LumiNova inlays for low-light visibility. The attachment system consists of a hand-sewn textile strap made from Cordura, secured by a folding clasp.

GenderMen

SignaturesChronoswiss

Country of OriginSwitzerland

Case Size41 mm

MovementAutomatic

CaliberC. 741 S

FunctionsChronograph, Hours, Minutes, Seconds, Date

Power Reserve48 Hours

Case MaterialsTitanium

Bezel MaterialsTitanium

Lug MaterialsTitanium

Case BackSapphire Crystal