Our watch repair and service procedure is designed to ensure every timepiece leaving our atelier complies with the original functional and aesthetic specifications. Each movement is completely overhauled, and each case and bracelet is meticulously refinished to restore its luster.
Timekeeping accuracy and water-resistance are rigorously tested to guarantee the level of quality and reliability you expect from Konstantyn Boyajian Atelier.
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What’s included in the repair and service procedure
Registration, Identification & Diagnosis
When your watch arrives, we photograph and register it in our computer system, along with your comments and observations. Every timepiece has a few unique numbers that make it individual – the case reference number, case serial number, movement reference, and movement serial number. These numbers form a classified combination by the manufacturer that identifies your watch and ensures its traceability, especially in the event of theft.
A specialized watchmaker carefully examines your watch and decides on what, if anything, has to be done – with each movement checked. You will receive an estimate for approval before servicing starts.

Dismantling & Pre-washing
To start the repair and servicing, the strap or bracelet are removed from the case. Then, the watch is opened to remove the movement, after which it is entirely dismantled and pre-washed. The watch movement components are examined meticulously and replaced if they show signs of premature wear, or risk affecting the operation of the mechanism.
Replacing Components & Adjustments
Every watch component is identified, replaced, or repaired depending on its level of wear, age, and the preventive maintenance instructions stipulated in the Manufacturer’s complete maintenance service. New parts are fitted if necessary, and the most frequently-used case and movement components are changed: seals, crown, push-pieces, correctors, barrel, chronograph module, central seconds, and chronograph hands and chronograph counters.
Watch Cleaning
Every movement component is cleaned under a clearly-defined procedure. First placed in individual washing containers explicitly designed to avoid scratching, then followed by ultrasonic baths to be degreased and cleaned thoroughly.
Assembly & Lubrication
Lubrication is essential for your mechanical watch to run correctly and guarantees correct operation: it limits the friction between the mechanical parts, reducing energy losses and wear. When assembling the movement, depending on the level of mechanical complication, the watchmaker can use up to a dozen different oils and greases.


Diurnal Rate Adjustment
The watchmaker runs your watch for 24 hours to stabilize all its moving components, which ensures its accuracy. They then adjust the inertia of the balance dynamically and its isochronism in five positions, simulating the normal wear of the watch. The rate results must comply with the Manufacturer’s standards and tolerances.
Refinishing (optional)
Just like the movement, the case and bracelet are examined in minute detail. All parts showing signs of wear are systematically replaced or restored. We may offer to refinish the case and bracelet. If appropriate, certain deep marks and scratches in the metal are laser-treated to add material and recover a shine as close as possible to the original appearance. Other surfaces are polished or brightened depending on the level and depth of marks. However, we recommend that you refinish your watch no more than three to five aesthetic during its life cycle. More than this will run the risk of damaging the angles and geometry of the case.



Casing Up
Once the dial and hands are fitted to the movement, It is then inserted delicately into the case and secured with a casing ring, depending on the model. A new crown, seals, and for chronograph models, push-pieces are fitted to keep your watch water- and air-resistant. After a final visual inspection, the watchmaker completes the casing up by screwing down or pressing the case back in firmly.
Final Inspection and Quality Control
At the end of the watch repair and service procedure it is time for quality control. Air compression tests to detect the most insignificant leak are performed to ensure that your watch remains water-resistant for a period of two years. Some models are subjected to an additional condensation test known as the “drop of water.” After the repairs and servicing, your watch undergoes a rigorous technical, functional, and aesthetic assessment. The daily rate is observed over a cycle of five to twelve days. The power reserve and the additional functions are also tested. The criteria are identical to the ones governing the quality control of a new watch before arrival in the market. The results of these assessments are registered and archived, thereby providing a thorough overview of the history of work on your watch.
Two-Year Service Warranty
The work done as part of the watch repair and service, as well as replacement parts, are covered by a two-year warranty.
Note: The service warranty will not cover the failure to observe the recommended water-resistant control or service, anomalies caused by normal wear and tear, defects relating to a shock, abnormal use, incorrect handling, work on the watch performed by someone other than a watchmaker of Konstantyn Boyajian Haute Horlogerie.