Today, every hour, every minute, every second counts. This hallmark of the present had its origin in the 18th century. Louis Berthoud, son of the famed watchmaker Ferdinand Berthoud, developed the Regulateur dial. His idea was that the minute hand should be dominant, while the hour and second hands rotate in separate areas of the dial. This was a ground-breaking invention which also accommodated a general development: people were increasingly measuring the most minute units of time. They increasingly demanded time measurement that was both accurate and identical everywhere. The new dial appeared in precision pendulum clocks, known as the regulators. They synchronized processes and measurements in transportation, trade and communications, and functioned as timers in the centuries that followed. Until the late 1960s, precision pendulum clocks were the standard used for official determination of the time - until they were replaced by atomic clocks. The 6100 rose gold model reflects the self-image and philosophy of the Sinn company down to the tiniest detail. The elegant case is made of 18-carat rose gold, which provides a striking contrast to the guilloché dial. The glass and back are anti-reflective to ensure optimal readability and clear visibility. The SZ 04 hand-wound movement used in the REGULATEUR was developed with a special passion which, in addition to numerous other sophisticated details, gives the appearance and functionality of this watch its distinction.