An annual calendar is a rare complication – few have been made since it was introduced by Patek Philippe in 1996 – and this platinum option from Lange is perhaps the most precious currently in production. Because of that, many would argue it’s meant to be worn on special occasions. And they wouldn’t be wrong. But that doesn’t make it unsuitable for daily use, especially once you consider its size and the convenience of the calendar functions.

For more, visit A. Lange & Söhne’s website.

A. Lange & Söhne Annual Calendar. Case: 38.5 mm x 9.8 mm, platinum. Functions: central hours and minutes, subsidiary seconds; day, date, month, year and phases of the moon; annual calendar. Movement: manufacture caliber L085.1 SAX-O-MAT, Glashütte three-quarter plate decorated with Glashütte stripes; 476 parts, 43 jewels, 46-hour power reserve. Non-limited edition: $54,800.