Ru En
Quartime watch lying on a turntable

Displaying the time in the Russian tradition

The name of the “Quartime” watch comes from the Latin word “quarta”, or “quarter”, and the English word “time”. It displays the time in a 6-hour format, enabling the owner to keep track of time according to the natural rhythms of the four periods of the day – morning, day, evening and night, as in Russian tradition, where the day is not divided into two 12-hour periods but four 6-hour periods. This is the first time in the history of watchmaking that a time of indication using the “morning-day-evening-night” cycle has been used.

The central hour hand makes one rotation in six hours. Six miniature apertures located on the dial show the hour markers, and a small window in the lower part reveals the current period of the day. At night, the numbers 12 to 5 are displayed, in the morning the numbers 6 to 11, in the day 12 to 5 again, and of course in the evening from 6 to 11 once more. Each new period of the day begins with a synchronised instantaneous rotation of the hour marker dials and the period of day indicator.

Quartime watch dividing day into 4 periods

Watch features


  • Photo Quartime watch with the back case removed
    Quartime watch installation in the mechanism of a plate with a logo
    Quartime watch installation of the fixing rim on the back cover
    Quartime watch fixing the rim on the case back with screws
    Quartime watch rear view on white background

Сase back

The “Quartime” watch employs an unusual way of displaying the time from the point of view of traditional watch mechanics. It combines the classic analogue method of a continuously moving hour hand with the principles of digital time indication, where the rotating hour hand is supplemented with an automatically switching scale revealing the period of the day. The sophisticated and intriguing technical feature of this construction is that the period of day indicator moves in a “morning-day-evening-night” cycle in one direction, while the hour markers alternately go backwards and forwards.

Quartime watch photo of case back


The calibre K.01-3 of the “Quartime” watch was developed by Konstantin Chaykin and is equipped with the mechanical device he invented indicating “Russia time” in the “6 o’clock” position, showing the period of day on a “morning-day-evening-night” scale and synchronised with the changing of the hour indication scale. The movement was made entirely at the Konstantin Chaykin manufactory and is made according to the standards of haute horlogerie. Components finished using classical techniques: striped and perlage; fine longitudinal, radial and circular grindings; abrasive blasting; manual chamfering, polishing; polished screw holes, pins and jewels; flat polishing; spherical polishing of the axel tips; and galvanized plating of rhodium and gilding. A distinctive feature of the movement is the use of four gold ouches, and a branded regulator (a device developed by Konstantin Chaykin to fine tune the effective length of the spring).

Caliber: К01-3 with hand winding by Konstantin Chaykin manufacture

Power Reserve: 45 hours

Accuracy: +/- 40 seconds per day

Photo of the movement Quartime watch


Case dimensions: Diameter 40 mm, thickness 13 mm

This website uses cookies. Browsing this page, you accept the use of cookies. For more information, please read our