Questions and Answers about Mondaine Watches

How do I adjust a mesh strap?

On this page are some frequently asked questions. Scroll down to read about

Skin reactions to Mondaine watches, servicing your watch, replacing your handbook/manual, the waterproofness of your watch

Adjusting a mesh strap.

Adjusting a Mondaine mesh steel strap is easy but there are a couple of pitfalls of which you should be aware.

In the next few steps I will explain how easy is to adjust your watch, if you have chosen a mesh strap particularly. Mesh straps are very popular lately they all go very well with our collection of Mondaine watches and some of our clients prefer mesh and not leather.

See steps below:

Step 1.  On the reverse of the strap you should see a succession of ridges.  You will also notice a corresponding ridge on the clasp.  Sounds obvious, but once you have decided where the clasp should reside on the strap, you need to align these two ridges.

Step 2. Get a piece of string or ribbon and wrap it around your wrist.  Snip the string so that one end meets the other and measure this diameter.

Step 3.  On the other end of the strap you will see the hook which goes over the clasp – you will see the next picture.  From this hook the measured distance will be where the end of the string lies.

The clasp mechanism – the watch is to the right of the picture

Step 4.  This is the tricky bit!  Insert a small screwdriver into the hole on the main clasp part, from the right hand side and bend it down towards the strap thus opening the clasp.  Do not  insert a tool from the left side, under the clasp and use the bar as a fulcrum; you will bend this rod and the watch strap will not hook over it.  Move the clasp to the desired position and gently locate the ridge nearest the position.  Once located, press down on the open clasp until it clicks into place – voila!

Is my Mondaine waterproof?

No!  But it is water resistant.

Water Resistant is a common mark stamped on the back of wrist watches to indicate how well a watch is sealed against the ingress of water. It is usually accompanied by an indication of the static test pressure that a sample of newly manufactured watches were exposed to in a leakage test. The test pressure can be indicated either directly in units of pressure such as bar or (more commonly) as an equivalent water depth in metres (in the United States sometimes also in feet).

The two most common markings found on the back of Mondaine watches are:

30 100 3 which means it has been tested at 30m, 100ft, 3 atm, and

100 300 10 which equates to 100m, 300ft and 10 atm.An indication of the test pressure in terms of water depth does not mean a water resistant watch was designed for repeated long-term use in such water depths. For example, a watch marked 30 metres water resistant cannot be expected to withstand activity for longer time periods in a swimming pool, let alone continue to function at 30 metres under water. This is because the test is conducted only once using static pressure on a sample of newly manufactured watches. The test for qualifying a diving watch for repeated usage in a given depth includes safety margins to take factors into account like aging of the seals, the properties of water and seawater, rapidly changing water pressure and temperature, as well as dynamic mechanical stresses encountered by a watch.  This adds to the importance of changing seals at battery replacement time for example.

So what in practical terms does this mean?

3 ATM activities at this depth might include accidental splashing from hand washing or rain, but not washing up.

5 ATM – will cope with the above plus showering or swimming in shallow water

10 ATM – will also cope with swimming or snorkelling

30 ATM – will also cope with skin diving

50 ATM – will also cope with Scuba Diving

The first indication that you have water ingress is a slight misting on the inside of the glass.  IMMEDIATE action is required by a qualified watch repairer to dry the watch out before rusting occurs.  See the post on How To Get My Mondaine Repaired

The weakpoint of all watches is the crown adjuster which alters the date or time.

Replacement handbooks or manuals

Did you know you can obtain replacement handbooks and manuals?  

Try this link to download a pdf (instruction manuals) for all models of Mondaine Official Swiss Railways Watches.

Please note, that download link will take you to Mondaine official website.

Will I get a reaction to Mondaine watches?

I am sensitive to some base metals and especially have an allergic reaction to Nickel.  Will I get this reaction to Mondaine watches?

Mondaine, as a thoroughly responsible company, subjects all of its range to stringent tess to ensure they comply with EC and International standards.

To quote them:

The materials used by Mondaine are subjected to severe tests in order to avoid allergies. For those who are hyper-sensitive to stainless steel we recommend you buy a watch which is made from titanium, gold or plastic.

Can’t say fairer than that!  Most good retailers will I am sure be prepared to let you test drive the model you are interested in to see if there is a reaction.  Obviously, you would need to return the watch in perfect condition if you prove to be a reactor.

Where can I get my Mondaine serviced?

Mondaine watches are hard wearing and made to a high standard, but even so, occasionally the watch will need a service to maintain it.  The Mondaine service centre offers a range of services to keep you on time.

They offer a partial maintenance from a bracelet sizing service around £15 or so, or more complicated work including:

  • Rating/regulating check
  • replace crown, gaskets and a new battery where needed
  • water resistance control
  • Case and bracelet cleaning
  • Final bench testing

Costs vary according to the sophistication of the watch but expect to pay £20-£35 or so.

There is also a complete maintenance service:

  • Movement dissembling, cleaning, reassembling, oiling, regulating and functions checked
  • Replace crown, gaskets and battery where necessary.
  • Repair or replacement of worn movement parts
  • Water resistance control and case and bracelet cleaning and bench testing.

Expect to pay £50-£80 or so, and of course parts are extra.

Another optional service restores your watch to near perfect condition, with cleaning, polishing and scratch removal.  This is not a guaranteed restoration as obviously it depends on the depth of scratches etc.  But talk to them and get advice.

The address is:
Mondaine Service Centre,
Locker Hull and Thornton Ltd
10 High View Close
Vantage Business Park

01664-420003 or
Go to site.

A word of sensible advice – do use a “signed for” delivery service (Royal mail is perfect) and attach a tag with your details on it.  Do feel free to ask for an estimate. Allow a couple of weeks for diagnosis and estimate, and another couple or so from go ahead for the work to be completed.

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