The A. Lange & Söhne 1815 Annual Calendar is the ‘entry-level’ Lange model with full calendar, available in pink or white gold
A dynamic (diachronic) annual calendar displays the hour, day, date, and month. The first of the month is automatically adjusted following months of 30 or 31 days. Mostly, a manual correction is needed for the first of March or on the 28th day of February. Or the 29th in leap years.
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An annual calendar is less complicated and expensive than a perpetual calendar, which will not require manual adjustment till 2100. As that year will not be a leap year, even though its number is evenly divisible by 4. Another calendar option for watches is the triple calendar, also known as triple date or complete calendar.
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Watches with an annual calendar
The Rolex Sky-Dweller 2017 is now available as Rolesor model, in steel and yellow gold or in steel and white gold
This sporty Patek Philippe Complications Ref. 5960/1A-010 Annual Calendar Chronograph is Patek’s entry-level chronograph
This Blancpain Villeret Quantième Annuel GMT Steel enriches the Villeret collection with a metal version. With annual calendar function