At the heart of the Grandmaster Chime beats a manually wound mechanical movement, Caliber 300 GS AL 36-750 QIS FUS IRM, delivering an extraordinary suite of complications: grande and petite sonnerie with classic gongs, minute repeater, strikework mode display, alarm with time strike and on/off indication, date repeater, and movement and strikework power-reserve indication. A strikework isolator, second time zone with day/night display, and crown position indication round out a slate of functions that few watchmakers have ever attempted.
The instantaneous perpetual calendar tracks day, date (shown on both dials), month, and leap-year cycle by hands, while a four-digit year aperture and moon phases complete the calendar on the reverse. The time side presents a brown opaline dial with gold applied Breguet numerals and a hand-guilloché hobnail pattern; the calendar side shares the same brown opaline tone, both resting on an 18K solid gold dial plate. The reversible case itself is adorned with a matching hand-guilloché hobnail motif, measuring 47.7 mm in diameter and 16.07 mm in height, and is humidity- and dust-protected.
A hand-stitched dark chestnut alligator leather strap with square scales and a patinated finish secures the watch via a white gold and rose gold fold-over clasp, tying together the two-tone character of the case in a cohesive, refined package.
