Hints and Recommendations

Regular Maintenance

Like every fine precision mechanism your Glashütte Original should be checked regularly. We recommend that you have it serviced every 3 to 5 years, depending on the climate and how the watch is handled.

By doing so you work with us to ensure the precise operation of your watch and maintain its value at the same time.

Water resistance

Engraved on the case back of your watch you will find the test pressure (e.g. „5 bar/atm”), which indicates the water resistance of your watch.

3 bar/atm
The watch is protected against perspiration and splashes of water. It not suitable for wearing in a bath, shower or sauna.

5 bar/atm
The watch is protected against perspiration and splashes of water. It can also be worn while swimming. The watch should not be worn while showering or in a sauna, or jumping into the water.

10 bar/atm
The watch has a high degree of water resistance. It is not suitable for diving.

20 bar/atm
The watch can be worn while diving, but it is not a professional diver’s watch.

These indications are valid for new watches from the manufactory. For watches that have been serviced by Glashütte Original, these indications are valid at the time of servicing. How long a watch remains water resistant cannot be stated in hours, days or months. A variety of factors can impact the seals, such as ultraviolet light, cosmetics, salt water or heavy shocks. We recommend that the water resistance be checked once a year.

For servicing and water resistance checks you are requested to contact our service department.

Winding a Glashütte Original

A manually wound watch should be wound every day, preferably at the same time every day. The mainspring is [outfitted with a terminal curve that is] secured to the spring barrel. When it reaches the fully wound point there is a noticeable click.

When an automatic watch reaches the fully wound point, the mainspring’s slipping clutch prevents it from being blocked. As a result, this type of watch cannot be „overwound“. 

If an automatic watch is not worn for a long period of time, it becomes necessary to wind it by hand. To achieve a complete winding and with that sufficient power reserve, it is necessary to wind the watch manually using the crown. Depending on the movement type, it is necessary to wind the crown 30 – 40 times.

Please note that from that point on the energy performance of an automatic watch depends to a great degree on the wearer’s habitual behaviour with respect to physical activity.

Setting the watch winder

To ensure optimal winding we recommend setting a watch winder to 800 - 1000 revolutions per day. Please note the following recommendations regarding the winding direction of the watch winder:

Calibre 100 - both directions

Calibre 95/96 - both directions

Calibre 90 - counter clockwise

Calibre 39 - counter clockwise

Manual winding watches are not suitable for use with watch winders.

Please note that the use of a watch winder results in some wear and tear of the movement and that at a result, servicing is recommended every 3 to 5 years.

The advantages of a watch winder are:

  • The movement continues to run.
  • The calendar functions continue to function during operation of the watch. In particular there is no need to re-set the perpetual calendar.
  • The viscosity of the oils remains constant over a long period of time.

Permissible rate deviation

Because mechanical watches operate in a different way they are not comparable to quartz watches or radio-controlled watches (the standard here is the Caesium isotope block in Frankfurt).

Glashütte Original watches are set to perform within the following tolerance limits:

  • Manually wound movements: -4 to +6 seconds over 24 hours (average daily rate)
  • Automatic movements: -5 to +10 seconds over 24 hours (average daily rate) 

If you should notice that over a long period of time your Glashütte Original deviates from the above norms, please contact our customer service.

Factors having a negative impact on the rate

Please note that the rate precision of a mechanical watch depends to a very great extent on the habits of the wearer, variations in temperature and disruptive mechanical factors, which can lead to a deviation from the norm in daily use.

It also a fact that since the introduction of electrical appliances magnetism has had a growing impact on mechanical devices. While the earth’s magnetic field presents no danger, magnetic fields from loudspeakers, door-closers, locks and even mobile telephones can have a lasting negative impact on the rate of a mechanical watch. For this reason watches should not be worn or stored for long periods within range of electromagnetic fields including those from televisions, mobile phones or, in the health service arena, MRT devices.

Antireflective sapphire crystals

A sapphire crystal has a hardness of 9 on the Mohs scale (diamond is rated at 10). Sapphire crystals however have a high refraction which is sometimes visible in unpleasant reflections that can affect the legibility of the dial. For this reason on the dial side of our watches we use sapphire crystals that are anti-reflective on both sides.

This anti-reflective treatment is achieved through the steam application of a special chemical layer, which is not quite as resistant as the sapphire crystal. As a result some abrasion or scratches in the anti-reflective layer may occur when wearing the watch. This is an indication of normal wear and tear and is not covered by our warranty.

Luminous material for hands and dial indexes

The luminous colour in your watch consists of the luminous material known as „Superluminova“. After sufficient charging of the light pigments by sunlight or artificial light the stored light energy is released over an extended period of time (hours).

This assures good legibility even in poor light or complete darkness. The „Superluminova“ luminous material is free of radioactive and environmentally harmful components.

Leather bracelets

For thousands of years leather has been one of the noblest and at the same time most versatile organic materials to have been used for clothing, jewellery and accessories. The leathers we use are treated by means of traditional curing methods. The leather processed for use in our leather bracelets does not require additional treatment such as that necessary for shoe leather.

External influences such as natural perspiration, ultra violet light, hand creams or perfume cause changes in the surface and structure of the leather. Discolouring and hardening may result. Clean your leather bracelet regularly with a soft cloth. If particularly dirty it can be cleaned using a mild soap solution as well.

Please note that the lifespan of a leather bracelet is limited. If a replacement becomes necessary, we recommend that this be taken care of at the latest after one year of wearing the watch. For this purpose please refer to your Glashütte Original dealer or contact our customer service directly.

The 6-digit ID number on the case

On the case of every newly completed watch we apply a unique 6-digit number beneath the horn at 2 o’clock.

This number provides information on:

  • the reference number
  • the serial number
  • the movement number
  • the technical details of the movement
  • the condition of the watch when delivered

You are kindly invited to register your watch, using this identification number. Please visit the contact form on our web site. This number is linked to our master registry and assures a high degree of security to the buyer.

Glashütte Original watch care

Thank you for choosing a watch from our Glashütte Original Manufactory. It is very important to us that you, as our customer, are satisfied. As a result we would like to offer you excellent service, always.

We are happy to provide in this section a number of recommendations so that your enjoyment of your Glashütte Original will endure:

 

Regular maintenance || Water resistance

Winding a Glashütte Original || Setting the watch winder

Permissble rate deviation || Factors with negative impact on the rate

Antireflective sapphire crystals || Luminous material for hands and dial indexes

Leather bracelets || The 6-digit ID number on the case