Maîtres du Temps presents Chapter One Round, featuring a bold, architecturally inspired round case housing Chapter One’s groundbreaking combination of complications. The interplay of the multi-level concentric circles of the case and dial entices the viewer’s eye inward to the majestic amphitheater of the indication-rich dial. There, attention might first alight either on the kinetic ballet of the sublimely finished tourbillon or on the eye-catching red of the counterpoised chronograph second hand, both in contrast to the backdrop of the dial’s dark brushed-satin finish. However, it isn’t long before the clear legibility of layout impresses with its elegant and functional design.
The circles within circles are perfectly balanced by the juxtaposition of the rectangular forms of the two roller indications showing the day and moon phase, which curve down from the top of the muscular case like buttresses and seamlessly integrate the lugs for the strap. Large polished chamfers running the full length on each side of the case catch and dynamically reflect the light and provide a foil to the brushed finish of the vertical elements.
Developed by a collaboration of world-renowned master watchmakers, Christophe Claret and Peter Speake-Marin, Chapter One Round features a world-first combination of complications: tourbillon, mono-pusher chronograph, retrograde date, retrograde GMT, and two rolling bars indicating the day of the week and phase of the moon.
A tour of the highly legible dial reveals central coaxial hours, minutes, and chronograph 60-second counter; tourbillon and day of the week roller at 6 o’clock; retrograde GMT at 9 o’clock; 60-minute chronograph counter and precision moon phase roller at 12 o’clock; and retrograde date at 3 o’clock. Stylish ergonomic correctors with a slide-to-unlock feature make adjusting the calendar indications a tactical pleasure.
Actualizing the sophisticated case of Chapter One Round comprising 96 individual components requires the precision and care of an artist. The hand-polished and brushed-satin finishes of the three main case elements central body and two lugs demand meticulous exactitude to ensure that all of the finishes line up precisely so that the lines flow smoothly. The development of the case alone required a full year of research and development.
The ease of both reading and adjusting Chapter One’s indications disguises the fact that Chapter One is an incredibly complex timepiece crafted from 678 finely finished and beautifully decorated components. Chapter One Round stands as an enduring testament to the skill, patience, and dexterity of its world-class creators.
The bold architectural form, innovative indications, and ergonomic functions of Chapter One belie the incredible complexity of its unique movement and the structural sophistication of its case.
Chapter One’s master watchmakers have come together to craft a horological work of art, both inside and out. Alternating finishes play with light around the case, imparting a sense of strength and majesty without leaving a trace of the complexity involved. The ease of both reading and adjusting Chapter One’s many indications disguises the fact that this is a world-first combination of complications crafted from 558 components.
No wristwatch before Chapter One has ever featured a tourbillon movement incorporating a mono-pusher column wheel chronograph, retrograde date, retrograde GMT, and phase of the moon and day of the week indications displayed on their own distinctive rolling bars. Efficiently transmitting power 90° to the two rollers and ensuring that they work simultaneously with the time, date, GMT, and chronograph was an immense technical challenge. That the challenge was met and surpassed is further testament to Chapter One’s enormously talented team.
A tour of the dial reveals central coaxial hours, minutes, and chronograph 60-second counter; tourbillon and day of the week roller at 6 o’clock; retrograde GMT at 9 o’clock; 60-minute chronograph counter and precision moon phase roller at 12 o’clock; and retrograde date at 3 o’clock. Meticulous attention to every minute detail throughout the design and execution of all facets of Chapter One’s development has resulted in a timepiece of exceptional presence and refinement. The harmoniously integrated rolling bars, for example, had to be both large enough to be easily read and small enough to be ultralight and homogeneous with the case. Scintillating, laser-pierced moon and stars on the outer roller of the moon phase indication add to its stellar elegance.
Myriad details make Chapter One a timepiece that richly rewards a closer look, from the small window between the day roller and the tourbillon, which allows a unique view of the superbly finished gyrating tourbillon cage, to the contrast of the hands against the brushed-satin finish of the multi-strata dial. Even the locking corrector pushers are formed from curves running concentrically to perfectly follow the graceful flow of the circular case.
Model: Chapter One Round, Ref C1R.55.2E.22-2
Limited Edition of 11 pieces
Manual-wind mechanical movement, one-minute tourbillon, mono-pusher chronograph, retrograde date indicator, retrograde GMT indicator, day of the week indication on roller, patented precise moon phase indication on roller
Central hands indicating hours and minutes
Central chronograph counterpoised second hand
60-minute counter at 12 o’clock
Retrograde date at 3 o’clock
Retrograde GMT at 9 o’clock
One-minute tourbillon at 6 o’clock
Day of the week indication on roller at 6 o’clock
Patented precise moon phase indication on roller at 12 o’clock
Two-position winding crown: pushed in to wind the watch; pulled out to set the time
Chronograph: start/stop/return-to-zero function activated by single pusher in the crown
Date corrector at 2 o’clock
Day of the week corrector at 4 o’clock
Moon phase corrector at 8 o’clock
GMT corrector at 10 o’clock
Dimensions: 51 mm x 32 mm
Number of components: 558
Number of jewels: 58
Power reserve: 60 hours
Tourbillon rotation: 60 seconds
Balance frequency: 21,600 vph (3 Hz)
18K 5N red gold
Number of components: 96
Dimensions: 62 mm x 59 mm x 22 mm
Sapphire crystals with double anti-reflective coating
Display back: sapphire crystal with anti-reflective coating
High polish and satin finishes
Correctors with integrated locking system
Dial & Hands
Number of components: 24
Multi-faceted and beveled with brushed and velvet surface finishes
Diamond-cut facet applied markers with Super-LumiNova
Red counterpoised chronograph hand
Diamond-cut facet hands for chronograph counters, hour, minute, date, and GMT
– Day roller: matte anodized Anticorodal finished aluminum
– Moon phase roller: anodized Anticorodal finished aluminum inside a matte anodized cover with laser-pierced moon and stars
– Window between day roller and tourbillon
Hand-sewn alligator strap with 18K 5N red-gold deployant buckle