Baume & Mercier Riviera Black, Satine, Sunray Dial 41mm Men M0A10825

Uniting the historic 1973 luxury sports silhouette with high-precision Swiss mechanical timing, deep monochrome architecture, and refined ergonomic proportions, the Baume & Mercier Riviera Automatic Chronograph 41mm M0A10825 represents a benchmark in contemporary luxury sports horology. Redesigned from the earlier 43 mm iterations into a more versatile, tailored 41.00 mm format with a 13.94 mm case height, this timepiece is crafted from surgical-grade 316L stainless steel. It showcases the Riviera collection's iconic dodecagonal (12-sided) bezel secured by four functional polished steel screws, alternating between circular satin-brushed surfaces and mirror-polished chamfers. The dial features a radiant sun-satin black face (noir satiné soleil) engraved with an embossed wave motif, framed by three snailed chronograph totalizers: a 30-minute counter at 12 o'clock, a 12-hour counter at 6 o'clock, and a running small seconds sub-dial at 9 o'clock. A dual Day-Date calendar aperture sits at 3 o'clock, while rhodium-plated Roman numerals, riveted baton indices, and faceted dauphine hands are coated with Super-LumiNova for low-light legibility beneath an anti-reflective sapphire crystal. Through the exhibition sapphire crystal case back, the Swiss automatic mechanical chronograph movement beats at 28,800 vibrations per hour (4 Hz) across 25 jewels, delivering a 48-hour power reserve. Fitted with an integrated 3-row satin-polished stainless steel bracelet featuring tool-free quick-release interchangeability and a triple-folding clasp with security pushers, it is pressure-tested to an aquatic 100 metres (10 bar / 10 ATM) of water resistance and backed by Baume & Mercier’s official 2-year international manufacturer warranty.

Key Highlights

• Slimmer 41.00mm Chronograph Architecture: Ergonomically downsized from the 43 mm version into a balanced 41 mm case format designed for superior wrist comfort and daily wearability.

• Iconic Dodecagonal (12-Sided) Screwed Bezel: Signature 12-sided bezel secured by four functional polished steel screws, alternating between circular satin-brushed and mirror-polished facets.

• Swiss Made Automatic Chronograph Calibre: Powered by a high-frequency 4 Hz (28,800 vph) self-winding mechanical chronograph movement featuring 25 jewels and a 48-hour power reserve.

• Exhibition Sapphire Crystal Case Back: Transparent screwed case back revealing the mechanical column mechanism, balance assembly, and engraved oscillating weight.

• Sun-Satin Black Wave Dial with Snailed Counters: Deep black sunburst (noir satiné soleil) dial face featuring embossed wave decoration and three recessed snailed sub-dials.

• Integrated Day & Date Complication: Dual calendar aperture at 3 o'clock displaying both the day of the week and numerical date.

• Super-LumiNova Night Legibility: Rhodium-plated dauphine hands and riveted markers treated with Swiss Super-LumiNova (C1 White / Blue-Green Glow) for nocturnal visibility.

• Scratch-Resistant Anti-Reflective Sapphire Crystal: Double-treated sapphire glass providing distortion-free optical clarity under direct sunlight.

• Integrated 3-Row Solid Steel Bracelet: Articulated metal bracelet featuring satin-brushed outer links and mirror-polished center accents.

• Tool-Free Strap Interchangeability: Integrated quick-release spring bars allowing effortless strap changes without specialized tools.

• 100-Metre (10 ATM) Aquatic Water Resistance: Pressure-tested to 10 bar (100 m / 330 ft) with a screw-down crown for active water sports, yachting, and swimming.

• Official 2-Year International Warranty: Backed worldwide through the Richemont global service network with optional warranty extension.

Design & Craftsmanship

1973 Riviera Heritage & The Reworked 41mm Dodecagonal Steel Chassis

First unveiled in 1973, the Riviera broke traditional design conventions by introducing a dodecagonal (12-sided) bezel paired with an integrated silhouette, establishing itself as one of the original Swiss luxury sports watches. In reference M0A10825, Baume & Mercier refines the Riviera chronograph—previously offered in a prominent 43 mm format—into a tailored 41.00 mm diameter with a 13.94 mm profile. Forged from surgical-grade 316L stainless steel, the case combines circular satin-brushed finishes on the 12-sided bezel with mirror-polished chamfers and vertical brushed flanks. Four functional steel screws anchor the bezel, emphasizing its architectural character. On the reverse side, an exhibition sapphire crystal case back reveals the mechanical movement and running train. The screw-down fluted winding crown is flanked by streamlined chronograph pushers at 2 and 4 o'clock and finished with the Greek letter Phi (Φ)—the horological emblem of the Golden Ratio and divine harmony.