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The independent Swiss luxury watch company Montres Romain Gauthier made its debut at Baselworld 2007 with the Prestige HM, featuring his own in-house manufacture movement. The Prestige HMS followed in 2010.

In 2013, Romain Gauthier unveiled Logical One, an extraordinary mechanical timepiece loaded with many innovations. Logical One features the quadruple-patent-pending Romain Gauthier flat chain and-fusee style constant force system with ruby chain links, ergonomic push button winding system, dial-side visible balance, mainspring barrel with sapphire inserts, plus a 60-hour power reserve indicator.

This year, the master watchmaker is introducing high jewellery versions of Logical One – The Logical One Secret Diamonds & Logical One Secret Ruby – by exploring superlative expressions of fine art and haute horlogerie.  With its cover closed, hours, minutes and seconds are embraced in a glittering ocean of diamonds cascading right down to the lugs.

An incredible 181 invisibly set baguette diamonds, totally nearly 7 carats, make for an ever-changing panorama of constantly glittering and sparkling reflections.

A gentle squeeze on the pusher discreetly set into the case band at 4 o’clock lifts the cover, revealing the intricate complexity of Logical one’s award-winning − Best Men’s Complications Watch at the 2013 Grand Prix d’Horlogerie de Genève − multi-patented constant force movement.

The fully integrated cover sensually follows the form of the sapphire crystal underneath to create a canvas for artists of many mediums such as gem setting, guilloche, miniature painting, enamelling, and engraving. And besides the sheer transcendental aesthetical magnificence of a cover and lugs blanketed in 100s of stunning diamonds, they also provide a practical advantage in creating an extremely scratch resistant case.

Technical details
Special features
Gem setting:  181 invisibly set baguette diamonds, 6.9 carats total
Hours, minutes, small seconds, 60-hours power reserve, push-button winding and innovative chain-and-fusee style constant force system.
Limited Edition.

Case and strap
Diamonds: red gold cover invisibly set with 149 baguette diamonds IF to VVS/G+, 6.0 carats; lugs invisibly set with 32 baguette diamonds quality IF to VVS/G+, 0.9 carats
Case materials: red gold
Movement plates and bridges: titanium, stainless steel, brass
Dimensions: 43mm x 15.9mm
Water resistance: 30m /3atm / 90ft
Sapphire crystal with anti-reflection coat front and display back
Winding by push button at 9 o’clock
Time-setting crown with sapphire cabochon at 2 o’clock
Cover open by push button at 4 o’clock
Strap and buckle: alligator leather hand-stitched in Switzerland with red gold pin buckle

In-house manufacture movement calibre
Dimensions: 35.5mm x 10.5mm
Power reserve:  circa 60-hours
Number of jewels: 36 in movement, 34 for chain
Number of components: 394
Balance frequency: 28,800 bph / 4Hz
Highest level haute horlogerie finishing, including hand polished screws and jewel countersinks; hand bevelled and polished bridges and plates.
Four patents pending

* Specifications may change according to the artwork and case materials

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