March 23, 2026
The latest release from H. Moser & Cie., the Streamliner Tourbillon Concept Ceramic, merits a close examination of its technical attributes. This timepiece integrates advanced material science with a complex mechanical caliber, presenting a compelling case study in modern horological engineering. The primary focus here is not on abstract superlatives but on the measurable specifications and material choices that define the watch’s construction and performance.
Case and Bracelet Specifications
The architecture begins with an integrated case and bracelet crafted entirely from anthracite grey ceramic. The case measures a contemporary 40.0mm in diameter with a thickness of 11.0mm, extending to 12.8mm including the sapphire crystal. Ceramic is notoriously difficult to machine and finish, making the execution here particularly noteworthy. The design preserves the Streamliner’s characteristic fluid lines, featuring a combination of precisely brushed surfaces flanked by a polished bevel running the length of the bracelet. The signature S-shaped polished edge on each link demonstrates a high level of manufacturing control over a challenging material. The structure is rated for 12 ATM (120 meters) of water resistance, secured by a screw-down crown.
Engineering Details of the HMC 805 Caliber
At the heart of the watch is the HMC 805 automatic caliber, a movement measuring just 5.50mm in thickness. It operates a one-minute flying tourbillon at 6 o’clock, beating at a frequency of 3Hz. A key technical feature is the implementation of a double hairspring, designed to improve isochronism by compensating for gravitational shifts in the balance’s center of gravity. The caliber provides a substantial 3-day power reserve, replenished by a bi-directional pawl-based winding system driven by a lavishly openworked 18k red gold rotor. The movement plates and bridges are finished with an anthracite grey coating, maintaining a cohesive aesthetic with the case.
Advanced Materials and Craftsmanship
The material selection extends to the dial, which is constructed from a white gold base given a hammered texture. Over this base, multiple layers of red *grand feu* enamel are applied and fired to create a gradient effect with significant visual depth. This traditional, artisanal process provides a deliberate contrast to the high-tech ceramic of the exterior. While the movement’s internal angles are machine-finished rather than hand-chamfered, the complexity of the enamel work and the precision of the ceramic finishing highlight a focus on different, yet equally demanding, forms of craftsmanship.
In conclusion, the H. Moser & Cie. Streamliner Tourbillon Concept Ceramic is a technically robust offering. Its value proposition is anchored in the synthesis of a durable, intricately finished ceramic exterior, the sophisticated engineering of the HMC 805 tourbillon caliber, and the application of traditional *grand feu* enameling. It is a calculated blend of material innovation and mechanical precision.
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