Perpetual calendar

Explaining the Greubel Forsey Perpetual Calendar That’s Simple But Complicated (with Original Photos & Price)

Greubel Forsey's first and only perpetual calendar, the Quantième Perpétuel à Équation is cleverly constructed perpetual calendar that is notably complicated, but simple to use, with all its functions controlled via the crown.

Hands-On with the First Ever Perpetual Calendar Wristwatch with a Leap Year Indicator

Thirty years passed between the first perpetual calendar wristwatch, and the first one with a leap year indicator, made by Audemars Piguet in 1955. Here's a look at one double-signed example of the Audemars Piguet ref. 5516.

Up Close With The Patek Philippe Ref. 5207P, A Spectacular Grand Complication

One of the most complicated timepieces Patek Philippe makes, the Ref. 5207P combines a minute repeater, instantaneous perpetual calendar as well as a tourbillon, inside a platinum case with hand-engraving on its flanks. The Ref. 5207P really is a grand complication.

Hands-On With The IWC Portuguese Perpetual Calendar In Steel (With Photos And Price)

Introduced in steel for the first time earlier in 2014, the IWC Portuguese Perpetual Calendar combines its flagship, seven day caliber 5000 automatic and signature perpetual calendar mechanism with a four digit year.

Introducing The Patek Philippe Grandmaster Chime Ref. 5175, A Reversible, Grande Sonnerie, Perpetual Calendar Wristwatch (With Specs And Price)

The flagship timepiece of Patek Philippe's highly anticipated 175th anniversary collection is the Grandmaster Chime Ref. 5175, the brand's most complicated wristwatch to date. It combines a 1366-part grand complication movement with a massive, Baroque case that is reversible and wearable on both sides.

Hands-On With The Patek Philippe 5940G, A Tastefully Detailed Perpetual Calendar (With Live Photos And Price)

One of the Baselworld 2014 introductions, the Patek Philippe Ref. 5940G is a cushion-shaped perpetual calendar in white gold with a tastefully executed dial, powered by the calibre 240 Q.

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