Service Centre

Book a Service

Owning a beautiful luxury watch is not only a reflection of personal taste, but also a long-term investment. Only regular servicing will ensure that your timepiece performs flawlessly for many years to come. Watch servicing is essential for both the precision and longevity of your watch.

Our master watchmakers, trained by iconic manufacturers, carry out all servicing with the support of state-of-the-art horological equipment. We are an authorized service center for IWC Schaffhausen, OMEGA, Breitling, Zenith, NOMOS, Rado, and Longines. As one of the leading service centers in the Czech Republic, we take care of your watch with the utmost expertise and dedication.

You can find us on the 2nd floor of the Nový Kolowratský Palác – through the passage next to our boutique at Na Příkopě 17, Prague 1.

+420 736 630 134
+420 222 318 812
servis@dusak.cz

Opening hours:

Mon–Fri: 9:00 – 18:00

Sat, Sun & public holidays: Closed

Opening hours at the end of the year:
24. 12. – closed
25. – 26. 12. – closed
31. 12. – closed
1. 1. – 2. 1. 2026 – closed
5. 1. – 9. 1. 2026 – closed

What Is a Watch Service?

Taking your watch in for servicing is much like taking a car in for maintenance. A watch must remain in perfect condition to serve you with the highest precision and reliability for as long as possible.

In addition to complete overhauls, our watch service also offers partial, or preventive, maintenance. This typically includes resealing, checking the movement and power reserve, ultrasonic cleaning, and polishing.

We also provide a wide range of minor repairs and complementary services, such as diagnostics, bracelet resizing, strap replacement, battery replacement, water-resistance testing, moisture removal, index reattachment, and the setting of time and complications.

What to Expect from a Complete Watch Overhaul

  • First, we perform a precise diagnostic and recommend the necessary scope of work.
  • The movement is completely disassembled, and all components are cleaned using specialized technology.
  • We inspect all parts subject to wear and replace them if necessary.
  • The movement is then reassembled and all moving components are lubricated.
  • The watch is regulated to ensure continuous precision according to the manufacturer’s specifications.
  • For all models, seals are checked and replaced if required, followed by a water-resistance test.
  • Finally, the case can be polished to restore the watch’s original finish. For OMEGA,, Breitling, IWC, Longines, and NOMOS watches, polishing is included automatically as part of the complete service.

How Often Should You Service Your Watch?

The frequency of watch servicing depends on several factors, including the type of movement, the conditions under which the watch is regularly worn, and the manufacturer’s recommendations. Most watchmakers suggest having a mechanical watch serviced every three to five years for resealing and maintenance. However, the exact interval may vary depending on the type of watch.

Mechanical Watches – Manual and Automatic – Complete Overhaul

We recommend a complete service every 6 to 10 years. Mechanical watches, whether manual or automatic, contain dozens of moving parts that naturally wear over time. Lubricants in the movement gradually dry out, increasing friction and potentially affecting accuracy or damaging components. Regular servicing ensures precise and reliable operation while helping to prevent much more costly repairs later. We also recommend bringing your watch in for a check-up service every 2 years.

Quartz Watches

We recommend servicing quartz watches every five to seven years. Although quartz movements have fewer moving parts, they still require regular maintenance. Battery-powered watches are generally more accurate and need less servicing than mechanical watches, but battery replacement should always be handled by professionals. Over time, seals can deteriorate, so regular servicing ensures water resistance and protection against dust and moisture.

Water-Resistant and Diver’s Watches

We recommend servicing water-resistant and diver’s watches every two years. These watches feature special rubber seals that naturally degrade over time, especially when regularly exposed to water, salt, and varying temperatures. Regular resealing ensures that the watch maintains its rated water resistance, preventing water from entering the case and damaging the movement.

Neglecting Regular Servicing

Without regular maintenance and servicing, your watch’s performance and longevity may be compromised.

Loss or reduction of accuracy is a clear sign that your watch needs servicing. Mechanical watches in particular may start to gain or lose several minutes per day due to worn components or dried lubricants. During each regular service, the movement is adjusted precisely according to the manufacturer’s specifications to maintain its original accuracy.

Over time, the movement can wear down if lubricants dry out and dust particles contaminate the mechanism. Increased friction between moving parts then leads to premature wear. Without timely professional servicing, this can seriously damage the movement and necessitate a complete overhaul.

Neglecting regular servicing of water-resistant and diver’s watches can lead to loss of water resistance. Over time, seals wear out, allowing water to seep into the case. This can cause rust, corrosion, and damage to the movement. Regular servicing ensures seals are replaced before moisture can enter the case.

Without regular maintenance, the longevity of your watch is at risk. Well-maintained timepieces, on the other hand, can last for generations and may even increase in value over time.

How Do You Know It’s Time to Service Your Watch?

In addition to the recommended service intervals for each type of watch, there are specific signs that indicate it’s time to entrust your timepiece to the care of experienced professionals.

The first and most obvious sign is a change in timekeeping, when your watch starts gaining or losing more than 10 to 15 seconds per day.

If you hear unusual squeaking or grinding sounds when winding the watch or setting the time, or if the crown feels stiff, it’s time for a service.

If you notice condensation forming under the crystal that does not disappear within a short time – or occurs repeatedly – your watch requires immediate servicing. Moisture can cause severe damage to the movement, so the sooner you bring your timepiece in, the better.

For quartz watches, the battery should be replaced every 2 to 8 years, depending on the manufacturer’s recommendation. At our watch service center, our professionals will not only replace the battery, but also check the seals, test water resistance, measure the movement’s power consumption, and clean the contacts if necessary.

Benefits of Regular Servicing

Whether you own mechanical, automatic, or quartz timepieces, regular servicing ensures they remain in perfect working condition for many years to come. Our master watchmakers care for your watch with the utmost expertise, allowing it to be cherished and passed down for generations.

What Regular Servicing Ensures

  • Regular servicing ensures your watch remains consistently precise and reliable.
  • It preserves the value of your timepiece – and for prestigious brands, may even enhance it.
  • It allows early detection of potential issues, preventing costly repairs in the future.
  • It extends the lifespan of your watch, turning it into a treasure for generations to come.

Water Resistance and Waterproofing

When choosing a watch, you need to pay close attention to one of the basic specifications: how well it can withstand contact with water. This refers to water resistance or waterproofing, which people often confuse. Water-resistant watches can handle brief contact with water, whereas waterproof watches can safely be worn in the shower (just watch the strap!) or even while snorkeling.

Watches are protected from water, sweat, chlorinated or salty water, cosmetics, perfumes, and dust by the case and seals, which can naturally wear out depending on how often the watch is worn and the environment in which it is used. Watches that are only occasionally exposed to water or moisture should be checked every two years and resealed every 3 to 5 years.

However, if you wear your watch intensively in humid conditions, we recommend a check-up service once a year, and if you regularly swim with your watch, resealing should be done every 2 years. In any case, remember this golden rule: unless you own a dedicated diving watch, never operate the crown or pushers while the watch is wet!

Water-Resistant Watches

Water-resistant watches should withstand brief exposure to water or humidity; however, water resistance is a complex feature. If you choose a watch labeled “water-resistant”, it means the watch offers some degree of protection against water, but it is definitely not suitable for swimming, diving, or any prolonged contact with water.

Waterproof Watches

Waterproofing indicates the degree to which a watch is protected against water penetration. Many watch owners are often confused by the fact that water resistance is expressed in meters. In reality, it refers to the static pressure measured at a given depth under laboratory conditions.

For example, if your watch is marked 3 ATM / 30 m, this does not mean you can dive to a depth of 30 meters — a common misconception. With a 3 ATM model, your watch can only withstand high humidity, occasional splashes, or brief contact with water, such as when washing your hands.

If you plan to expose your watch to frequent or direct contact with water and moisture, we strongly recommend seeking expert advice already at the time of purchase.

Magnetic Fields

Apart from moisture and water, there is another hidden threat for owners of mechanical watches – magnetism. It exerts force on objects that enter a magnetic field and can alter their properties. Because magnetism is invisible, few people can easily imagine its effects. Unlike water, magnetism does not usually pose a risk of major damage or permanent destruction of a watch. However, it does have a significant impact on the accuracy of your timepiece.

Magnetized Watches

If you stand near a strong source of magnetic fields with electronic watches, they may stop. Once you move away from the source, they usually start running again, but you’ll need to reset the time. It’s different with mechanical watches, which in the same situation begin to show significant deviations. Sometimes they can even stop completely.

Sources of magnetism are all around us, present in almost every appliance we use daily. Small devices such as hairdryers or refrigerators usually don’t pose much of a threat. However, powerful sources include induction cooktops, speakers, airport scanners, medical diagnostic and hospital equipment such as CT scanners or MRIs – and even magnets in charging cases for e-cigarettes or tablets.

This means you should never place your watch near magnetic iPad covers or on the magnetic holder of your phone. A refrigerator or a microwave oven are also far from ideal resting spots for your watch.

How Much Magnetism Can Your Watch Withstand?

Although magnets are essentially everywhere nowadays, modern watches are designed to resist magnetization from common household appliances. Naturally, the environment in which you use your watch daily should be considered when choosing a timepiece. If you are frequently near stronger sources of magnetic fields, it is advisable to opt from the start for high-quality anti-magnetic watches.

Even if your watch becomes magnetized for some reason, it is not a serious problem today. Simply bring it to a professional watch service, where our experts will demagnetize and regulate your watch.

OMEGA – the pinnacle of precision and magnetic resistance

Mechanical timepieces of the highest quality are called chronometers. These are watches that have passed the COSC accuracy certification or, in the case of OMEGA, the even stricter testing of the independent METAS institute.

What is the difference between COSC and METAS? The COSC testing process evaluates the movement’s accuracy, which must remain within a deviation of −4 to +6 seconds per day, measured in five different positions of the movement.

The METAS test, however, lasts ten days, during which the certification process consists of 283 steps across eight different tests, and the watches are evaluated in six positions.

Their accuracy is rated at a deviation of 0 to +5 seconds per day, and in addition, the watches must be resistant to strong magnetic fields of up to 15,000 gauss. Watches that pass this stringent examination earn the prestigious title Master Chronometer.

Such a timepiece is powered by a co-axial escapement, which has become an iconic and original OMEGA solution for the heart of the watch—the movement. The balance wheel also incorporates a silicon hairspring, a non-ferrous material that maintains its shape and resists sudden shocks. Other components, such as arbors and pinions, are made from the non-magnetic material Nivagauss.

The entire process of creating such flawless timepieces—precise and resistant to external influences—is overseen by the Swiss Federal Institute of Metrology (METAS). Last year, OMEGA opened a new factory at its headquarters in Biel. The ultramodern production line, advanced technological processes, and dedicated space for conducting all eight METAS tests directly on-site allow the brand to equip more models with this exclusive technology than ever before.

METAS – Eight Tests in Ten Days

If you purchase an OMEGA timepiece with the Master Chronometer designation, you can also use a unique online application to see exactly how your watch performed in testing. You’ll find out the precision and resistance your watch had when it left the OMEGA factory. What exactly did your watch go through? Here’s an overview of the tests:

  1. The chronometer movement must withstand a 15,000-gauss magnetic field in two positions for 30 seconds.
  2. The same test is repeated, but the entire watch is exposed to the magnetic field.
  3. After the watch has been exposed to the magnetic field for 24 hours, its accuracy is measured. The following day, after demagnetization and another 24 hours, the chronometric precision is checked again, and the minimum deviation between the two measurements is recorded.
  4. The average daily deviation from chronometric accuracy is tested over four days, in two different temperatures and six positions. The watches are then magnetized, demagnetized, and again exposed to different temperatures and positions. At the end of the fourth day, the average deviation is calculated.
  5. The power reserve test must match the declared running time.
  6. As part of the average daily deviation from chronometric accuracy, measurements are taken in six positions. The difference between the two most divergent values is recorded as the Delta deviation.
  7. Watches are positioned in six different orientations, and their chronometric precision is recorded at 100% and 33% power reserve. The average values from both measurements are subtracted to determine the deviation.
  8. For the water resistance test, the watch is submerged and the surrounding pressure is gradually increased to the maximum level the watch is rated for. This ensures a true guarantee of water resistance.

Anti-Magnetic Watches

The first truly anti-magnetic mechanical watch in the proper sense is considered to be the OMEGA Seamaster Aqua Terra, resistant to 15,000 gauss, which was introduced in 2013. Since then, all similar OMEGA models have been certified by METAS, guaranteeing resistance to 15,000 gauss. For comparison, the anti-magnetic OMEGA Railmaster CK 2914, launched in 1957, had a resistance of 900 gauss.

Water Resistance Table

STUPEŇ VODOTĚSNOSTI OZNAČENÍ STŘÍKAJÍCÍ VODA, DÉŠŤ MYTÍ RUKOU, RELAXAČNÍ PLAVÁNÍ NA HLADINĚ PLAVÁNÍ,POTÁP. BEZ DÝCH.PŘÍSTROJE, KOUPÁNÍ HLUBINNÉ POTÁPĚNÍ
WR 0 M bez označení NE NE NE NE
WR 30 M 3 ATM/3 BAR ANO NE NE NE
WR 50 M 5 ATM/5 BAR ANO ANO NE NE
WR 100 M 10 ATM/10 BAR ANO ANO ANO NE
WR 200 M 20 ATM/20 BAR ANO ANO ANO ANO
WR 300 M 30 ATM/30 BAR ANO ANO ANO ANO
WR 500 M 50 ATM/50 BAR ANO ANO ANO ANO
WR 1 000 M 100 ATM/100 BAR ANO ANO ANO ANO

Warranty Periods Table

ZNAČKA ZÁRUKA NA ZAKOUPENÉ ZBOŽÍ PODMÍNKY ZÁRUK ZÁRUKA NA POSKYTNUTÉ SERVISNÍ SLUŽBY
OMEGA Záruka na hodinky je poskytována po dobu 5 let, záruka pro šperky je poskytována po dobu 2 let. Záruční doba je platná bez podmínek. Na servis hodinek OMEGA poskytujeme záruku 2 roky na všechny druhy oprav.
IWC Záruka na hodinky IWC je poskytována na 2 – 8 let dle podmínek. Běžná záruka je poskytována po dobu 2 let. Pokud se zákazník do dvou let od koupě zaregistruje na stránkách www.iwc.com, záruční doba se prodlouží celkem na 8 let. (Rádi pomůžeme s registrací již při koupi.) Na servis hodinek IWC poskytujeme záruku 1 rok na celkovou opravu a 2 roky na částečnou opravu.
Breitling     Na servis hodinek Breitling poskytujeme záruku 1 rok na celkovou opravu a 2 roky na částečnou opravu.
Tag Heuer Záruku na hodinky Tag Heuer poskytujeme na dobu 2 – 5 let. Podmínkou prodloužení záruky ze 2 na 5 let je registrace na stránkách mytagheuer.com. Na hodinky Tag Heuer neposkytujeme servisní služby.
Chopard Záruka na hodinky Chopard je poskytována na dobu 2 – 5 let dle splnění podmínek prodloužení garance. Záruka na šperky Chopard je poskytována na 2 roky. Podmínkou prodloužení záruky ze 2 na 5 let je nutnost registrace na stránkách www.chopard.com do dvou let od nákupu hodinek. Záruka na šperky Chopard je platná na 2 roky bez podmínek. Na hodinky Chopard neposkytujeme servisní služby.
Nomos Záruka na hodinky Nomos je poskytována na 2 roky. Záruční doba je platná bez podmínek. Na servis hodinek Nomos poskytujeme záruku na celkovou opravu 1 rok a na částečnou opravu 2 roky.
Longines Na hodinky Longines poskytujeme záruku 2 – 5 let. Na hodinky s automatickým nátahem, které byly zakoupeny od 1. 1. 2021, poskytujeme záruku 5 let. Na ostatní automatické hodinky Longines platí záruka 2 roky. Na quartzové hodinky Longines poskytujeme záruku 2 roky. Na servis hodinek Longines poskytujeme záruku na celkovou opravu 1 rok a na částečnou opravu 2 roky.
Rado Na hodinky Rado poskytujeme záruku 2 roky. Záruční doba je platná bez podmínek. Na servis hodinek Rado poskytujeme záruku 2 roky na všechny druhy oprav.
Ulysse Nardin Na hodinky Ulysse Nardin poskytujeme záruku 2 – 5 let. Podmínkou prodloužení záruky ze 2 na 5 let je nutnost registrace na www.ulysse-nardin.com kartou, kterou zákazník získá koupí hodinek. Tato registrace musí být provedena do jednoho roku od nákupu hodinek. Bez registrace hodinek poskytujeme záruku 2 roky. Na hodinky Ulysse Nardin neposkytujeme servisní služby.
Jaeger-LeCoultre Na hodinky Jaeger-LeCoultre poskytujeme záruku 2 – 8 let. Běžná záruka pro hodinky Jager-LeCoultre je poskytována po dobu 2 let. Pokud se zákazník do dvou let od koupě zaregistruje na stránkách www.jaeger-lecoultre.com, záruční doba se prodlouží celkem na 8 let. Stejná podmínka platí i pro stolní hodiny Atmos. (Rádi pomůžeme s registrací již při koupi.) Na hodinky Jaeger-LeCoultre neposkytujeme servisní služby.
Baume & Mercier Na hodinky Baume & Mercier poskytujeme záruku 2 – 3 roky. Na strojek hodinek Baumatic s rozšířenou rezervou chodu na 5 dní poskytujeme záruku 3 roky za předpokladu, že se zákazník zaregistruje na stránkách www.baume-et-mercier.com, a to do 60 dní od koupě hodinek. Bez registrace má i strojek záruku 2 roky jako ostatní části hodinek. Na hodinky Baume & Mercier neposkytujeme servisní služby.
Zenith Na hodinky Zenith poskytujeme záruku 2 – 3 roky. Běžná záruční doba na hodinky Zenith je 2 roky. Pokud se zákazník do dvou let od koupě hodinek zaregistruje na stránkách www.zenith-watches.com, může záruku prodloužit celkem na 3 roky. Na servis hodinek Zenith poskytujeme záruku na celkovou opravu 1 rok a na částečnou opravu 2 roky.
QlockTwo Na hodiny QlockTwo poskytujeme záruku 2 roky.    
Erwin Sattler Na hodiny Erwin Sattler poskytujeme záruku 2 roky.    
Jaquet Droz Na hodinky Jaquet Droz poskytujeme záruku 2 roky.    
Maurice Lacroix Na hodinky Maurice Lacroix poskytujeme záruku 2 roky.    
Natahovače      
Wolf 2 roky    
Swiss Kubik 2 roky    
Buben Zorweg 2 roky    
Paul Design 2 roky

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  • Klenotnictví Dušák

    Na Příkopě 17, Praha 1

    +420 736 630 133

    +420 222 318 811

    prodejna@dusak.cz

    Mon–Fri 10:00 - 19:00

    Sat 10:00 - 18:00

    Sun, Holidays 13:00 - 18:00

    PRE-CHRISTMAS OPENING HOURS (28. 11. – 24. 12.):
    Weekdays – 10:00–19:00
    Saturday, Sunday – 10:00–18:00
    24. 12. – 10:00–19:00
    25. – 26. 12. – closed

    POST-CHRISTMAS OPENING HOURS:
    Weekdays – 10:00–19:00
    Saturday – 10:00–18:00
    Sunday – 13:00–18:00
    31. 12. – 10:00–13:00
    1. 1. 2026 – closed
    9. – 11. 1. – closed

    Book a Visit

  • OMEGA Boutique

    Staroměstské nám. 6, Praha 1

    +420 601 221 566

    +420 222 318 862

    omega@omegabutik.cz

    Mon–Fri 10:00 - 19:00

    Sat 10:00 - 18:00

    Sun, Holidays 12:00 - 18:00

    PRE-CHRISTMAS OPENING HOURS (28. 11. – 24. 12.):
    Weekdays – 10:00–19:00
    Sat, Sun – 10:00–19:00
    24. 12. – 10:00–13:00
    25. – 26. 12. – closed

    POST-CHRISTMAS OPENING HOURS:
    Weekdays – 10:00–19:00
    Saturday – 10:00–18:00
    Sunday – 12:00–18:00
    31. 12. – 10:00–13:00
    1. 1. 2026 – closed

    Book a Visit