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A TOURBILLON BUILT FOR THE DEPTHS
Traditionally, tourbillons are fragile complications destined for dress watches. The CMM.31 caliber, developed by Olivier Mory and manufactured by our team in Morteau, France, breaks this paradigm.
Based on the proven CMM.30 architecture, the CMM.31 introduces refined bridges, polished bevels, and wheel decorations, elevating both technical and aesthetic appeal. A sweep seconds hand mounted directly on the tourbillon cage, coated with Super-LumiNova, provides precise underwater readability and ISO 6425 standards compliance.
Engineered with enhanced shock resistance up to 5000 G’s and a screw-down crown, this ultra-limited edition is perfectly adapted for a 200m water-resistant professional diver, unlike conventional delicate tourbillons.
This makes the Superman Tourbillon CMM.31 one of the rarest combinations in watchmaking: a professional tool watch equipped with an in-house French tourbillon built for endurance.
TITANIUM GRADE 5 EXCELLENCE
Engineered from Grade 5 Titanium, the case and bracelet deliver the perfect balance of strength, lightness, and comfort. Renowned for its superior hardness and corrosion resistance compared to standard titanium, Grade 5 ensures exceptional durability in demanding environments while remaining hypoallergenic on the skin. The refined finishing, vertically brushed surfaces with polished bevels, enhances the geometry of the design and underscores the technical sophistication of this premium material.
AN OCEAN OF DETAIL
The dial features a deep blue organic wave-textured surface inspired by the motion of the sea. It presents a fine, irregular, non-directional relief composed of soft, continuous undulations, creating a dynamic interplay of light across its entire surface.
Applied hour markers in polished stainless steel, with sharply defined bevels, are filled with Grade A BGW9 Super-LumiNova and aligned on a perfectly even plane for enhanced legibility and precision. The hour, minute and seconds hands follow the same philosophy, combining polished finishes with generous lume application for optimal visibility in all conditions.
At 6 o’clock, the dial opens to reveal the 60-second tourbillon, framed by a luminous ring also coated with BGW9 Super-LumiNova. The tourbillon cage integrates a sweep seconds indication, delivering a captivating kinetic display as it rotates seamlessly within the partially open dial.
HAUTE HORLOGERIE FINISHING
The sapphire exhibition caseback reveals the beating heart, it shows off the distinctive architecture of the CMM.31 tourbillon caliber creating a fascinating experience for the true enthusiast.
The caliber’s bridges and wheels showcase meticulous haute horlogerie finishing, with finely micro-blasted surfaces, vertically brushed bevels, and chamfered edges that catch the light with elegance.
Each component is decorated with care, emphasizing the architectural beauty of the movement while underscoring YEMA’s commitment to refined craftsmanship.
TOURBILLON CALIBER
Invented by French horologist Abraham-Louis Breguet in 1795, the tourbillon is an advanced regulating organ present in certain high-end mechanical watches, intended to improve the precision of timepieces. It consists of a rotating cage containing the balance wheel and its hairspring, the escape wheel, the lever and the second wheel which drives it. The cage rotates 360 degrees every 60 seconds, which counteracts the effects of gravity and reduces any positional errors of accuracy. The tourbillon embodies watchmaking know-how, only a few Manufactures master the creation of this caliber masterpiece.
105 HOURS OF POWER RESERVE THANKS TO A LARGE BARREL
The CMM.31 has a single large barrel optimized to ensure a power reserve of 105 hours. Specifically manufactured for the CMM.31 by Générale Ressorts, this large barrel is off-centered in order to make enough room for the gears and the balance wheel so as to preserve a contained thickness.
FRANCO-SWISS ACCURACY
With its Swiss regulating part, the CMM.31 tourbillon is a high-precision movement ensuring high performance. The free-sprung balance wheel regulates isochronism for lasting precision and stability. In the absence of a regulator, the durability of the hairspring is increased, as is long-term precision. Adjusted in 6 positions, the CMM.31 ensures an accuracy of –3 and +7 seconds per day.
OPTIMIZED ESCAPEMENT
Interface between the gear train and the regulating organ, the escapement is the place where energy and chronometry intersect in a complex interaction. The escapement is an energy-demanding system, it alone consumes more than half of the barrels’ energy. It is the friction of the anchor pallets on the anchor which, despite their lubrication, dissipates a good part of this energy.
The CMM.31 tourbillon escapement presents notable improvements which reduce this friction thanks to an innovating and particularly sophisticated manufacturing process (LiGA technology). This advanced escapement ensures optimization of the entire mechanics, precision and longevity of the caliber components.
ANTI-MAGNETIC & SHOCK-RESISTANT
Designed for everyday life, the CMM.31 presents robust technical characteristics for a tourbillon caliber. Equipped with non-magnetic components, such as a Swiss-made non-metallic alloy hairspring, a Glucydur balance wheel with an adjustment mass made in gold and micro-components manufactured with LiGA technology materials, the CMM.31 is capable of withstanding exposures to electromagnetic fields up to 2,000 Gauss, a real feat for a tourbillon caliber.
The architecture of the tourbillon cage bridge with its free-sprung balance wheel and the shock absorbers manufactured by Kif make the CMM.31 impervious to shocks, vibrations, and acceleration up to 5,000 Gs in all directions.
GRADE 5 TITANIUM SCALES SLIM BRACELET
The new YEMA Scales Slim bracelet is crafted from Grade 5 Titanium, the very same material and brushed finishing as the watch case, ensuring perfect harmony between case and bracelet. Exceptionally lightweight yet highly resistant, the bracelet offers a sleek profile and outstanding comfort for everyday wear. Slim, robust, and refined, it enhances both the durability and the elegance of the timepiece while sitting naturally on the wrist.
The new clasp features an on-the-fly adjustment mechanism, perfect for adapting to wrist swelling due to heat, activity, or time of day. The bracelet fit can now be adjusted instantly, without removing the watch or using any tools.
GRADE A SUPER-LUMINOVA
The hour markers, hands and bezel pipe are coated with Grade A BGW9 Super-LumiNova for perfect readability in the dark.
