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Remember the Shabbat and keep it holy. Six days shalt thou labour and do all thy work. But the seventh day is the Shabbat of the Lord, thy God…’ says one of the Ten Commandments which according to legend Moses received from the Creator on Mount Sinai.
In Judaism, the Shabbat is no ordinary day of the week. It is a time when the world is filled with peace and calm, when families gather round the table to celebrate the miracle of serenity. During the Shabbat, the Torah calls people to distance themselves from the chaotic noise of weekdays to realise that the world has already been created and, for one day, can go without man’s help. Six days a week, people strive to rule the world but on the seventh day, they must strive to master themselves.
39 types of work are forbidden on the Shabbat, including Makeh Be’Patish or the ‘last strike of the hammer’, one of the most widespread. This term denotes any action that serves to prepare an object for operation, including the winding of a timepiece.
Konstantin Chaykin has thus invented a clock that respects the Shabbat. The patented mechanical device either provides the energy lacking to the spring to ensure the timepiece does not stop, or it stops 5-6 hours before the Shabbat begins. The timepiece’s power reserve is shown on a separate display.
When working on this model, Konstantin Chaykin was inspired by the beauty and complexity of the Jewish calendar, which is based on the movement of both celestial bodies. The dates and times at which all holidays begin are calculated using the duration of the lunar month and solar year.
Gilded Hebrew letters are positioned next to the hour-markers on the main dial. The date and month displays are shown on a separate dial. The one-minute tourbillon carriage is shaped like the Star of David. The winding key, which breathes life into this special timekeeping device, is kept in a miniature drawer.
All inscriptions on the clock are in Hebrew. Beneath the dial placed a plate bearing a phrase from the Tanakh (book of Tehillim): ‘So teach us to number our days, that we may apply our hearts unto wisdom’.
Shabbat
Ref. T760SS730100
Movement: TSB 01-1
Frequency: 18,000 vibrations per hour, 17 jewels, 8 miniature bearings, anchor escapement, one-minute tourbillion, 10 days power reserve. Movement is equipped with additional winding patented device (Shabbat function)
Functions: hours, minutes, seconds, Jewish calendar (month, day, date), moon phases, power reserve indicator
Dial: gilded brass, nickel-plating, steel hands manually blued
Case: steel, brass, nickel-plating, precious woods (wenge)
Dimensions: 254 mm х 249 mm х 123 mm

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Hijra (translated from Arabic) means migration and emigration. The term is used to denote the Islamic era established by the second caliph of the Arab caliphate Omar I in 638 of the Common Era in honour of the migration of the Prophet Mohammad from Mecca to Yasrib (Medina). This event is considered as key to the history of the emergence of Islam. 17 years after the great migration, caliph Omar I made it the foundation of the Islamic calendar, taking Friday, 16 July 622 – the day the Prophet Mohammad left Mecca – as the first day of the new era. It is a lunar calendar, meaning that the periods are calculated according to the changes in the phases of the moon. It thus does not depend on the movement of the sun.
You will not be able to find a timepiece even close to this one at any other Manufacture. The design of this clock contains an invention patented by Konstantin Chaykin (patent no. 2308748): a device that displays the months and dates of the Islamic calendar. The case of the clock is made from precious species of wood and represents a stylised mihrab into which the unique clock movement is placed. Its sides are held together by an openwork lattice with ornate floral decor in the tradition of mosques.
Over 350 manually polished and smoothed parts are assembled in a single movement, thereby demonstrating the unsurpassed quality of manual workmanship. The Maltese cross provides constancy in the winding torque of the spring, thereby enhancing the accuracy of the clock’s operation. Meanwhile, eight precision ball bearings ensure the movement’s axes work for hundreds of years.
The Lunar Hijra contains seven complications: 1. a one-minute tourbillon, completing 18,000 half-oscillations per hour, 2. a moon-phase display, 3. a month display (Gregorian calendar), 4. a date display (Gregorian calendar), 5. a days-of-the-week display in Arabic, 6. a month display (Islamic lunar calendar) with a mechanism to adjust the duration of the lunar month, 7. a date display (Islamic lunar calendar).
The Lunar Hijra collection includes a basic model with a month and date display (Islamic lunar calendar), as well as a modified version of the clock featuring a retrograde month and date display (Islamic lunar calendar).
Hijra
Ref. T760W730400
Movement: THJ 01-2
Frequency: 18,000 vibrations per hour, 13 jewels, anchor escapement, one-minute tourbillion, 10 days power reserve
Functions: hours, minutes, day, moon phases, Muslim calendar patented device (date, month, day in Arabic), Gregorian calendar date, month
Dial: gilded brass, nickel-plating, steel hands manually blued
Case: precious woods (wenge), nickel-plating, traditional ornamental pattern high finishing
Dimensions: 171 mm x 286 mm x 165 mm
Hijra
Ref. T760W730400
Movement: THJ 01-2
Frequency: 18,000 vibrations per hour, 13 jewels, anchor escapement, one-minute tourbillion, 10 days power reserve
Functions: hours, minutes, day, moon phases, Hijra calendar patented device with retrograde display (date, month, day in Arabic), Gregorian calendar
Dial: gilded brass, nickel-plating, steel hands manually blued
Case: precious woods (wenge), nickel-plating,  traditional ornamental pattern high finishing
Dimensions: 171 mm x 286 mm x 165 mm
Hijra
Ref. T760SS730100
Movement: THJ 01-2
Frequency: 18,000 vibrations per hour, 13 jewels, anchor escapement, one-minute tourbillion, 10 days power reserve
Functions: hours, minutes, day, moon phases, Muslim calendar patented device (date, month, day in Arabic), Gregorian calendar date, month
Case: steel, brass, nickel-plating, precious woods (wenge)
Dimensions: 254 mm x 249 mm x 123 mm

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This astonishing clock has been manually created from the first to the very last part, and is a unique timepiece. Its name ‘Al-Biruni’ was born when the style and philosophy of the clock were being developed, when Konstantin Chaykin was studying the theory and history of the Islamic calendar. Abu-r-Raikhan Biruni, or Al-Biruni, was the name of the greatest Eastern scholar from Khwarezm, who contributed enormously to the development of the science of calendars and chronology, and particularly the Islamic lunar calendar. The watchmaker decided to name this unique clock after this outstanding Muslim scholar to honour the great discoveries of the sages of medieval Asia, and to pay due respect to the greatly rich scientific and cultural heritage of the East.
While the entire clock is just 13 cm tall, the watchmaker was nonetheless able to masterfully fit additional complications into its miniature dimensions. The movement is equipped with date and month displays according to the Hijra lunar calendar, together with a tourbillon and moon-phase display.
The silver case reflects traditional architecture from Central Asia and is decorated with a fascinating mosaic composed of lapis lazuli, jasper, smalt and tiger’s eye. It recalls the mosaics present in mosques and madrasas in Samarkand and Astana. The magnificent mother-of-pearl dial features gold-plated numbers written in Arabic, the language of the Prophet.
Al-Biruni
Ref. T770AG72FL70
Movement: THJ 02-1
Frequency: 18,000 vibrations per hour, 21 jewels, one-minute tourbillion, 8 days power reserve
Functions: hours, minutes, moon phases, patented Muslim calendar device: date, month, day (in Arabic)
Dial: mother-of-pearl, gold, steel hands manually blued
Case: Silver, gold, lazurite, turquoise, agate, tiger’s eye (Florentine mosaic)
Dimensions: 124 mm х 146 mm х 68 mm

Mankind has long dreamt of conquering Time, of measuring Time. And so, we create complex devices to transpose the flow of Time into precise numbers and dates.
Skillful watchmakers create astonishing movements to intrigue and entrance us. We are but human – we are not satisfied to know that clocks and watches work – we are compelled to lift the veil of secrecy and observe for ourselves how the movements work within their sapphire dome.
Konstantin Chaykin is pleased to satisfy this curiosity in the Ant’s Tourbillon Clock. Metalwork is minimal on the bridges and the plates and you can observe delicate gears moving through the eternity of Time through a misty sapphire veil.
Skeleton hour and minute hands highlight the magnificent face; we are transposed into a tiny kingdom of luxury by the tiny hands and the royal blue of the face. A one minute flying tourbillion to count the seconds is the final touch.
Seventeen rubies minimize friction between the exposed movements, which are merely 83 millimeters high and could fit even into a pocket watch. The entire clock, from base to dome is only 130 mm high and 84 mm in diameter: The Ant’s Tourbillon Clock is indeed one of the smallest tourbillon clocks in the world Konstantin Chaykin is releasing The Ant’s Tourbillon Clock in a very limited edition – only a few lovers of extraordinary clock movements will be able to possess one.
Ants Tourbillon
Ref. T700MG7000BS
Movement: TCT 02-0
Frequency: 18,000 vibrations per hour, 17 jewels, anchor, one-minute tourbillion, 8 days power reserve
Functions: hours, minutes
Dial: skeletonized, gilded brass, steel hands manually blued
Case: mineral glass
Dimensions: 130 mm height, 84 mm width (diameter)