The Senator Chronometer is the first officially certified chronometer from Glashütte Original. The term “chronometer” denotes an especially accurate clock or watch such as those used for air and sea navigation in the past.
In Germany, wristwatch chronometer certification is administered by the State offices for weights and measurements of Thuringia (LMET) and Saxony (SLME). German chronometers must pass a series of demanding performance and accuracy tests; the exacting German norm requires, in addition, that each candidate for chronometer certification be set to the second and tested in its own case.
A novel stop-seconds/reset mechanism allows the wearer to set the precise time with ease. Pulling the crown stops the time display and causes the second hand to jump to the beginning position, where it remains; the minute hand moves simultaneously to the next full minute.
When the crown is then turned to set the time, the minute hand stops only on the indication of the full minute, thus always guaranteeing the correct relationship between the minutes and seconds displayed.
The layout of the dial recalls that of a pocket chronometer, with subsidiary seconds and power reserve displays along the central axis and the characteristic Glashütte Original panorama date positioned at 3 o’clock.
The silver dial provides a rich contrast for the polished, blued sweep minute and pear-shaped hour hands and hand polished arbor. A milled railroad chapter ring encircles the central time display, and the milled Roman numerals add to the classic appearance of this impressive timepiece.
A new day/night indicator facilitates setting the time when changing the date: From 6:00 am until 6:00 pm the small circle located between the power reserve indicator and the center of the dial is white, and from 6:00 pm until 6:00 am it is black.
In recognition of the movement and the Senator Chronometer’s clear and elegant aesthetics, in 2010 the readers of Armbanduhren, a leading German watch magazine, voted the Senator Chronometer “Watch of the Year”.
An antireflective sapphire crystal protects the manual winding manufactory calibre 58-01, an eye-catching example of the art of watchmaking at Glashütte Original, with its three-quarter plate, screw-mounted gold chatons, and handengraved balance cock.
Of special note are the newly developed planetary gears that determine the up and down movement of the power reserve display.