Chronoswiss

Opus Chronograph Titanium

Reference Number :

CH-7543T.1S-BL2

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 TakeForget your hefty steel chronos; this Opus Titanium feels like strapping a cloud to your wrist, albeit a very complex, mechanically intricate cloud. Chronoswiss went full mad scientist here, carving away metal to reveal the C. 741 S movement doing its intricate dance beneath that stunning blue CVD dial. It's like horological theatre playing out right there. The titanium build isn't just for show; it makes this 41mm piece surprisingly wearable, defying its technical presence. You get the full chrono suite – 30-minute, 12-hour counters, the works – plus that handy analog date, all laid out against the skeletonized backdrop. The polished and brushed titanium, the knurled bezel, the Breguet hands... it's a symphony of textures and technical prowess. It’s a piece that doesn't scream for attention but earns it through sheer engineering artistry and that captivating blue dial, a modern interpretation of a Chronoswiss icon celebrating 40 years strong. It’s techy, comfy, and undeniably cool.

DescriptionThe Chronoswiss Opus Chronograph Titanium, reference CH-7543T.1S-BL2, utilizes a case constructed from Grade 5 titanium, measuring 41 mm in diameter and 14.8 mm in height. This housing is composed of 38 individual parts and presents a finish that combines polished sections with areas of satin brushing. A defining characteristic is the polished screw-down bezel, which incorporates a full thread design and distinctive side knurling. Protecting the dial is a curved sapphire crystal treated with a double anti-reflective coating. The case back is also notable, featuring a screw-down design with a satin finish and an integrated sapphire crystal for movement observation. Water resistance is rated at 10 bar, equivalent to 100 meters, ensuring protection against water ingress during activities such as swimming. The lugs are configured for a strap width of 21 mm.

Powering this timepiece is the Caliber C. 741 S, an automatic mechanical movement that has been extensively skeletonized to reveal its intricate workings. This caliber operates at a frequency of 4 Hz, or 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 and enhance longevity. Finishing details are meticulous, including a skeletonized rotor plated with blue CVD and adorned with Côtes de Genève decoration, running on a ball bearing system. Further refinements include a polished pallet lever, escape wheel, and screws, while the bridges and base plate exhibit perlage finishing. The dial itself is skeletonized, featuring a matte blue CVD coating. Time and chronograph functions are displayed via central hours and minutes, 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 "Breguet Losange" style, incorporating Super-LumiNova inlays for low-light visibility. The watch is secured by a hand-sewn textile Cordura strap equipped with 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