At this year’s watch fairs Patek Philippe drew crowds with the Celestial Sunrise & Sunset Ref. 6105G, an astronomical complication housed in a sculptural 47mm white‑gold case. The lugless case features cross‑hatched textures evocative of spacecraft and secures to the wrist with an integrated rubber strap for surprising comfort despite its size.
A notched bezel frames a layered dial of rotating sapphire discs: the base layer shows a star chart printed with the Milky Way and constellations; above it, a peripheral scale serves double duty as date indicator and sunrise/sunset display.
Two slender hands track the times of sunrise and sunset, while a red hammer‑style pointer indicates the current date. An elliptical outline on the sky chart marks the portion of the heavens visible above Geneva, and the disc rotates in real time thanks to a complex gear train. Patek equips the watch with dual crowns and patented correctors to switch between summer and winter time, ensuring accurate astronomical displays across seasons.
Powering this cosmic theatre is the Caliber 240 C LU CL LCSO, an evolution of the long‑running micro‑rotor movement. The 7.93mm‑thick calibre turns at 3 Hz and offers a 38‑ to 48‑hour power reserve from a 22‑karat gold micro‑rotor. Despite its 38 mm diameter, it drives the 47 mm case thanks to an elaborate module for the star chart and sunrise/sunset mechanism.
Finished with Geneva striping and secured under a solid caseback embossed with an X‑shaped motif and Calatrava cross, the 6105G is limited and priced at over four hundred thousand dollars—a testament to Patek’s mastery of astronomical watchmaking.
