Baume & Mercier Riviera Blue, Satine, Sunray Dial 42mm Men M0A10659

Combining the iconic 1973 dodecagonal luxury sports silhouette with an indispensable dual-time zone travel complication, maritime aesthetic, and robust Swiss mechanical performance, the Baume & Mercier Riviera Automatic GMT 42mm M0A10659 represents a premier companion for global voyagers. Sculpted in a 42.00 mm surgical-grade 316L stainless steel case measuring a slender 10.96 mm in profile with an integrated lug architecture, this timepiece showcases the Riviera collection's signature 12-sided bezel secured by four functional polished steel screws, alternating between circular satin-brushed surfaces and mirror-polished chamfered bevels. The dial features a radiant sun-satin deep blue face (bleu satiné soleil) decorated with a tone-on-tone wave motif, framed by an internal 24-hour peripheral GMT chapter ring. An independent central red-lacquered GMT hand tracks a secondary time zone at a glance, complemented by rhodium-plated riveted Roman numerals at 12 and 6 o'clock, faceted trapezoid hour indices, faceted dauphine hands coated with white Super-LumiNova (blue nocturnal emission), and a date aperture at 3 o'clock beneath an anti-reflective scratch-resistant sapphire crystal. Through the exhibition sapphire crystal case back, the Swiss Made mechanical automatic calibre (BM 11893-2 / ETA 2893-2 base) is on full view, beating at 28,800 vibrations per hour (4 Hz) across 21 jewels with a 42-hour power reserve. Mounted on an integrated blue vulcanized rubber strap featuring an embossed canvas/fabric texture, a tool-free quick-release interchangeability system ("Fast Strap"), and an adjustable triple-folding deployant clasp with security pushers, it is pressure-tested for 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

• Dual-Time (GMT) Complication: Dedicated red-lacquered central GMT hand tracking a second time zone against a 24-hour internal scale for seamless cross-meridian travel.

• Iconic Dodecagonal (12-Sided) Screwed Bezel: Signature 12-sided steel bezel anchored by four functional polished steel screws, combining circular satin-brushed and mirror-polished bevels.

• Sun-Satin Blue Wave Dial: Vibrant azure sunburst (bleu satiné soleil) dial face decorated with transparent wave motifs symbolizing the ocean swell.

• Swiss Made Automatic Calibre BM 11893-2: High-frequency self-winding mechanical GMT calibre operating at 28,800 vph (4 Hz) across 21 jewels with a 42-hour power reserve.

• Exhibition Sapphire Crystal Case Back: Transparent screwed case back revealing the mechanical balance wheel, gear train, and engraved oscillating weight.

• Super-LumiNova Blue Nocturnal Emission: Rhodium-plated dauphine hands and riveted markers treated with Swiss Super-LumiNova (Phos BL485nm Grade X1) emitting a vivid blue glow in low light.

• Slim 10.96mm Travel Case Architecture: Assertive 42 mm diameter and slender 10.96 mm profile engineered to slip comfortably beneath tailored shirt and jacket cuffs.

• Integrated Textured Blue Rubber Strap: Supple vulcanized blue rubber strap featuring an embossed canvas/fabric pattern for sport durability and all-day comfort.

• Integrated Tool-Free Strap Interchangeability: "Fast Strap" quick-release system allowing effortless strap changes in seconds without specialized tools.

• Adjustable Triple-Folding Deployant Clasp: Ergonomic stainless steel deployant buckle ensuring seamless underside closure and wrist security.

• Double Anti-Reflective Sapphire Crystal: High-clarity sapphire glass treated on both sides for distortion-free visibility under bright direct sunlight.

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

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

Design & Craftsmanship

1973 Riviera Heritage & The 42mm GMT 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 M0A10659, Baume & Mercier pairs this iconic silhouette with a dual-time complication engineered specifically for global travelers. Forged from surgical-grade 316L stainless steel, the 42.00 mm case features satin-brushed flanks and mirror-polished beveled chamfers. The 12-sided bezel combines a circular satin finish with four functional polished steel screws that anchor the structure. The screw-down octagonal winding crown is embossed with the Greek letter Phi (Φ)—the horological emblem of the Golden Ratio and divine harmony. On the reverse side, an exhibition sapphire crystal case back secured by four screws provides an unhindered view of the mechanical movement.