Patek Philippe Annual Calendar

From Watch Wiki: The Best Watches and Watch Brands
Jump to: navigation, search
Patek Philippe Annual Calendar
© Patek Philippe

Annual Calendar is a wristwatch by Patek Philippe.

First mechanical wristwatch with patented annual calendar. Overall, the self-winding movement Calibre 315 QA and the display of date, day of the week and month requires more components than the known Patek Philippe Calibre 240Q with perpetual calendar: 316 instead of 275. The mechanism is programmed so that it takes account of the different month lengths from 1 March to the end of February. Only then a small correction is necessary.

Movement:

Self-winding movement Calibre 315 QA, 21,600 A/h
Unidirectional winding central rotor in 21ct gold
36 jewels
Power reserve bis 48 hours

Case:

18ct red gold
Ø 37 mm, height 11.2 mm
Sapphire crystal
Screwed sapphire crystal caseback
Waterproof to 25 m

Dial:

Gold dial, ceramic white
Superimposed Roman numerals and red gold hands with luminous material

Functions:

Hours, minutes, central seconds, date
24-hours indication
Annual calendar

Bracelet:

Brown crocodile leather strap with folding clasp