Sinn Spezialuhren unveils its Spring Novelties of 2025 with each watch embodying a deep reverence for horological precision and engineering resilience. This year’s collection, featuring the U15, U16, and U18 diving watches, the 613 St and 613 St UTC chronographs, the T50 Goldbronze B, and the 534 Mother-of-Pearl series, reflects Sinn’s unwavering commitment to functionality and historical continuity. From robust diving instruments forged from German submarine steel to elegant ladies’ watches with faceted bezels, the novelties of 2025 encapsulate technical prowess and aesthetic finesse.

For pricing and enquiries, visit The Hour Glass boutiques or contact us directly.

For over twenty years, Sinn has pioneered the use of German submarine steel in its diving watches, leveraging materials designed for the harshest of environments. The U15, U16, and U18 take this heritage to a new level, crafted from steel sourced from the decommissioned Type 206 submarines U15, U16, and U18​. Each model is a living testament to maritime history, integrating Ar-Dehumidifying Technology for enhanced functionality and TEGIMENT Technology for superior scratch resistance. Water-resistant up to 500m (U15), 1000m (U16), and 2000m (U18), these watches are built for extreme conditions, ensuring precision at every depth.

The 613 St and 613 St UTC are Sinn’s latest diving chronographs, designed for those who require absolute reliability underwater. These 41 mm chronographs feature a 60-minute stopwatch display, magnetic field protection up to 100mT (80,000 A/m), and a captive diver’s bezel with minute ratcheting​. The UTC variant introduces a second time zone on a 24-hour scale, a valuable function for globetrotting professionals. Certified to withstand depths of 500 m, both models integrate Sinn’s Ar-Dehumidifying Technology, ensuring resistance to fogging and pressure fluctuations.

A testament to Sinn’s material innovation, the T50 Goldbronze B introduces a proprietary Goldbronze 125 alloy, blending bronze with 12.5% gold content for enhanced corrosion resistance​. The 41 mm case, crown, and bezel feature this patented alloy, offering a striking contrast against the dark blue dial, reminiscent of the ocean’s depths. The watch maintains Sinn’s hallmark features, including a captive safety diver’s bezel, Ar-Dehumidifying Technology, and pressure resistance up to 500 m. Over time, the alloy’s slow oxidation ensures a rich, evolving patina, reflecting the watch’s journey with its wearer.

For those who appreciate refined elegance, Sinn introduces the 534 Mother-of-Pearl S and W watches. These 34 mm ladies’ watches feature a polished stainless-steel case and a faceted bezel with 24 rhombus-shaped facets, symbolising the passage of time​. Available with black or white shimmering mother-of-pearl dials, both watches are a unique expression of craftsmanship. Paired with either a fine-link stainless-steel bracelet, leather strap, or Alcantara strap, these watches merge jewellery-like aesthetics with Sinn’s renowned durability, ensuring a blend of grace and sophistication.

Sinn’s 2025 novelties are not just watches; they are reflections of time itself—each one a fusion of history, technical mastery, and forward-thinking innovation. Whether navigating the ocean’s depths, measuring time with absolute precision, or embracing timeless elegance, these creations stand as enduring companions for those who value resilience, heritage, and performance.

The Sinn Spezialuhren Spring Novelties are available at Watches of Switzerland by The Hour Glass. To learn more or enquire about availability, visit the Watches of Switzerland boutiques or contact us directly.