Open the watch.
Open six watches and inspect how they keep time. The Ranger and Explorer II use self-winding mechanical calibres. The Overseas adds a column-wheel chronograph, the Presidential adds a full day and date calendar, the 1815 Tourbillon carries its entire escapement in a revolving carriage, and a battery-powered quartz module drives the Tank.
28,800 vph · 31 jewels · 70 h reserve
The Collection
Six watches · Five mechanical · One quartz · One tourbillonExplorer II
42 mmInspired by the Rolex Explorer II reference 226570
A black dial, fixed brushed-steel 24-hour bezel, orange GMT hand, and date display support travel across two time zones.
CAL. H-02 GMT · Inspect →
1815 Tourbillon
39.5 mmInspired by the A. Lange & Söhne 1815 Tourbillon reference 730.032
A pink-gold case, solid silver dial, and blued steel hands frame a flying tourbillon at 6 o'clock, hand-wound on a three-quarter plate.
CAL. H-05 T · Inspect →
Overseas Chronograph
42.5 mmInspired by the Vacheron Constantin Overseas Chronograph reference 5500V/110A-B481
A black reverse-panda dial, three elapsed-time registers, and a six-sided steel bezel frame a column-wheel automatic chronograph.
CAL. H-03 CH · Inspect →
Presidential Day-Date
40 mmInspired by the Rolex Oyster Perpetual Day-Date 40 reference 228238
A yellow-gold case, fluted bezel, green sunburst dial, full weekday display, and magnified date form a formal automatic calendar watch.
CAL. H-04 DD · Inspect →
Tank Louis
33.7 × 25.5 mmInspired by the Cartier Tank Louis reference WGTA0011
A polished gold rectangular case frames a silvered Roman dial and heat-blued sword hands. A compact quartz calibre drives this two-hand interpretation.
CAL. H-Q1 QUARTZ · Inspect →
Field Ranger
39 mmInspired by the Tudor Ranger reference M79950-0001
A matte black dial, luminous cardinal numerals, and broad steel hands give the Field Ranger a clear three-hand display.
CAL. H-01 · Inspect →