Key Highlights

• Baumatic manufacture automatic movement
• Genuine perpetual calendar complication
• Transparent grey sapphire dial
• 120-hour power reserve
• Moonphase display
• Integrated stainless steel bracelet
• Sapphire exhibition caseback
• Riviera heritage dating back to 1973

The Baume & Mercier Riviera Perpetual Calendar Baumatic [10786] is one of the most compelling values in modern Swiss high-complication watchmaking.

Combining a genuine perpetual calendar complication, a manufacture Baumatic movement, an integrated luxury sports-watch design, and a transparent sapphire dial, this Riviera delivers a level of horological sophistication typically associated with significantly more expensive timepieces.

Unlike traditional perpetual calendars that are often confined to precious-metal dress watches, the Riviera brings one of watchmaking's most prestigious complications into a versatile luxury sports-watch platform designed for everyday wear.

The watch's most striking feature is its transparent grey sapphire dial, which reveals portions of the perpetual calendar mechanism beneath while creating remarkable depth and visual complexity. Combined with the moonphase display, luminous hands, and multiple calendar indications, the dial offers a rare balance of technical sophistication and everyday legibility.

Powering the watch is Baume & Mercier's exceptional Baumatic manufacture movement, offering an impressive 120-hour power reserve, enhanced magnetic resistance, silicon technology, and outstanding long-term reliability. For many collectors, the movement alone is a compelling reason to own the watch.

The integrated stainless steel bracelet and iconic twelve-sided Riviera bezel reinforce the collection's distinctive identity, while the sapphire exhibition caseback allows owners to admire the movement in operation.

This is not simply a luxury sports watch.

It is a genuine high-complication Swiss timepiece designed for collectors who appreciate advanced watchmaking, modern design, and exceptional value.

What Is a Perpetual Calendar?

A perpetual calendar is one of the most respected complications in traditional watchmaking.

Unlike a standard calendar watch, a perpetual calendar automatically accounts for:

• 30-day months
• 31-day months
• February
• Leap years

without requiring manual correction.

The Riviera Perpetual Calendar displays:

• Day
• Date
• Month
• Leap Year
• Moonphase

All of this information is controlled mechanically through an intricate system of gears, levers, cams, and springs—without electronics or digital assistance.

Baumatic Performance

The manufacture Baumatic movement offers several significant advantages:

• 120-hour power reserve
• Silicon technology
• Enhanced magnetic resistance
• Improved long-term accuracy
• Reliable daily performance

Its five-day power reserve exceeds that of many competing luxury sports watches and allows the watch to remain running throughout an entire weekend off the wrist.

Riviera Heritage Since 1973

Introduced in 1973, the Riviera helped establish the luxury sports-watch category through its distinctive geometric design and relaxed Mediterranean character.

More than fifty years later, its iconic twelve-sided bezel and integrated bracelet architecture remain instantly recognizable, giving the Riviera a unique identity within Swiss watchmaking.

Why Collectors Love the Riviera Perpetual Calendar

The Riviera Perpetual Calendar combines:

• Genuine perpetual calendar complication
• Baumatic manufacture movement
• 120-hour power reserve
• Transparent sapphire dial
• Moonphase display
• Integrated luxury sports-watch architecture
• Sapphire exhibition caseback
• Exceptional value relative to competing perpetual calendars

The result is one of the most compelling luxury sports perpetual calendars available in Swiss watchmaking today.

Technical Specifications

• Model: 10786
• Collection: Riviera
• Movement: Baumatic Manufacture Automatic
• Complication: Perpetual Calendar
• Power Reserve: 120 Hours
• Escapement: Silicon Technology
• Case Size: 40 mm
• Case Material: Stainless Steel
• Bezel: Twelve-Sided Stainless Steel Bezel
• Crown: Stainless Steel Crown
• Caseback: Sapphire Exhibition Caseback
• Dial: Transparent Grey Sapphire Dial
• Crystal: Scratch-Resistant Sapphire Crystal
• Bracelet: Integrated Stainless Steel Bracelet
• Bracelet Finishing: Brushed & Polished
• Interchangeable System: Fast Strap System
• Clasp: Triple Folding Clasp with Security Push-Pieces
• Water Resistance: 100 Metres / 10 Bar
• Functions: Hours, Minutes, Central Seconds, Day, Date, Month, Leap Year Indicator, Moonphase, Perpetual Calendar

Baume & Mercier Authorized Dealer | 8-Year Baumatic International Warranty | Free Shipping Across Canada