Chronometer watch
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A chronometer is an extraordinarily accurate mechanical timepiece, with an original focus on the needs of maritime navigation. In Switzerland, timepieces certified by the Contrôle Officiel Suisse des
A 1928 Movado Ermeto mechanical chronometer.
Marine sandglass MMM
Complication (horology)
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In horology, a complication is any feature of a timepiece beyond the display of hours, minutes and seconds. A timepiece indicating only hours, minutes and seconds is known as a simple movement. Common
Three complications on a Gallet MultiChron Navigator (1943): a crown-controlled synchronizable second hand, a direction-finding 24-hour hand, and a 45-minute recording chronograph
Тhe Breguet No. 160 grand complication
Smartwatch with the following complications: Heart rate with sparkline; Moon phase; date; weather; sunrise/sunset.