The Nautilus Annual Calendar brings a genuinely useful complication into the familiar porthole-shaped case without turning the dial into a calendar worksheet. Day and month sit together beneath twelve, while the date, moon phase and 24-hour indication gather at six, leaving the horizontal embossing room to breathe.
The 5726 arrived in 2010 on a leather strap; bracelet versions followed in 2012. For the integrated-bracelet experience, look to the 5726/1A: the 5726/1A-001 has a restrained grey dial, while the blue-gradient 5726/1A-014, introduced in 2019, gives the calendar a more familiar Nautilus backdrop.
The annual calendar distinguishes between 30- and 31-day months, requiring a manual correction at the end of February. When handling one, pay particular attention to the bezel’s brushed surface and polished bevel: softened boundaries can betray refinishing that has taken some of the case’s crispness with it.
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