Masterpiece Roue Carrée Seconde

The Square that Keeps on Turning

The watch’s readability is enhanced by its Grand Colimaçon (or snailed) black or rhodium finish, which makes the indicators literally glow, while the alternation of satin-brushed and polished finishes adorning the 43 mm steel case showcases its silhouette to perfection. A large sapphire-crystal case back reveals the refinement of the ML156 mechanical movement, decorated with Grand Colimaçon in finest Swiss watchmaking tradition. The Masterpiece Roue Carrée Seconde—an unprecedented fusion of technology and talent—encapsulates the philosophy of Maurice Lacroix and its Masterpiece collection. A philosophy in which engineering and beauty dovetail to challenge the boundaries of design, in an attempt to change the very face of time. Resolutely masculine and eminently technical, this new item—a contemporary watch that breaks with preconceived ideas to stay ahead of its time— confirms the brand’s status as expert innovators. Galvanizing the most technical of watchmaking skills, it offers time a new lease of life.

CASE
- Steel, Φ 43 mm, satin-brushed and polished finish
- Domed sapphire crystal with anti-reflective coating on both sides
- Screwed case back with wide sapphire crystal
- Water-resistant to 50 m / 5 atm

MOVEMENT BRIDGE / DIAL
- In keeping with the Masterpiece Régulateur Roue Carrée (*) design, the dial has been created on the main plate of the movement itself and is decorated with a large “Grand Colimaçon”
- The square wheel and clover leaf mesh to transfer power with the same precision as the cogs in their circular counterparts; in addition the wheel is used to indicate the seconds
- The hours and power-reserve indications are engraved on the main plate
- Dial available in black or rhodium
- The square wheel and clover leaf are highlighted by a circular opening on the movement main plate itself, decorated with a sandblasted background. (*) Limited Edition launched in 2010

HANDS
- Trailing square wheel for the seconds display, circular satin-brushed finish upper part and polished circumference, seconds pointer coated with white C1 Superluminova (blue luminescence)
- No visible rotation axis
- Diamond-polished and faceted hours and minutes hands, coated with white C1 Superluminova (blue luminescence)
- Diamond-polished and faceted power-reserve hand

STRAP / BRACELET
- Large-scale black crocodile-skin strap, lined with black calfskin and black over-stitching

BUCKLE
- Folding steel clasp with push buttons
- Satin-brushed and polished finish

MOVEMENT
- ML 156 mechanical movement, hand-wound
- Developed in collaboration with HE-ARC, manufactured and assembled by Maurice Lacroix
- Design patented (square wheel / clover leaf)  

FUNCTIONS
- Hours and minutes indicated by central hands
- Small-second display by square wheel at 6 o’clock
- Power-reserve hand at 3 o’clock

VIBRATION: 18,000 vph, 2.5 Hz
POWER RESERVE: 45 hours    
JEWELS: 34        
ADJUSTMENTS: 5 positions after full winding and after 24 hours    
DECORATION: Grand Colimaçon, rhodium finish

Mechanical manufacture movement ML 156

Masterpiece Roue Carrée Seconde

About the movement

- ML 156 mechanical movement, hand-wound - Developed in collaboration with HE-ARC, manufactured and assembled by Maurice Lacroix - Design patented (square wheel / clover leaf) 

About our movements

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