Water-Resistance

The water-resistant watches are usually displayed in either meter or Bar. However, if your watch has a classification of 100m (10 Bar) this doesn’t necessarily mean that you can dive to a depth of 100m. 1 Bar corresponds approximately to 10 meters, which is related only to the compressed air in the water resistance test not actual dive depth. To be able to swim with your watch we recommend at least 100m/10 Bar and to dive we recommend at least 200 m/20 Bar. Listed below you will find more details about water resistant classification.

Pay attention that the crown must be closed and for watches with screw-down crowns, it must be screwed in all the way for water resistance to be guaranteed. If the crown was not closed it will no longer be covered under the guarantee should water damage occur. Watches under 100m/10 Bar are not considered to be water-proof only water-resistant, meaning they can only withstand minimal moisture. If you have noticed that your watch has moisture in it, contact either us or a nearby retailer as soon as possible to minimise the damage done on your watch. You are welcome to contact us with questions or concerns regarding water-resistance and it’s functions.

Classification

Light rain, sweat etc.

Showering, etc.

Swimming, etc.

Snorkelling

Diving

30 M / 30 BAR

XX
X
X
50 M 50 BAR

X
X
X
100 M / 10 BAR

X
X
200 M / 20 BAR

X
300 M / 30 BAR +

Can the chronograph functions be used under water?

To avoid water from penetrating into the watch movement, never operate the chronograph pushers under water.

Crown

The crown of a watch is the screw that is mostly used to adjust time and date and is most often placed at 3 o’clock.

Screw-down crowns, which are the most common among diving watches and occasionally on more classical watches, must be completely open in order to set the time and date but then must be completely closed again afterwards to ensure water-resistance.

Watches with a normal crown must also be pushed in completely in ensure water-resistance.

The crowns are relatively delicate so it is important to treat them with care. Different watches have more or less crown protection which can help avoid damages.

Glass

Sapphire glass is a very hard crystal which can only be scratched by diamond and is therefore commonly used on many watches. However, it can be broken if the watch receives a large shock, for example, getting dropped or hit very hard.

Mineral glass is a very common glass used on watches and is relatively strong although not as strong as sapphire glass.

Plastic glass, made of plastic, is quite sensitive and can brake easily. Although it is usually very easy to polish away hairline scratches

Stainless Steel

Stainless steel is extremely resistant, corrosion-resistant and hypoallergenic. It contains only a very small proportion of nickel, which is not released when worn and therefore does not trigger any nickel allergies.

Titanium

Titanium is a metallic element which is not only extremely robust, hypoallergenic and corrosion-resistant, but also particularly light – approximately half as heavy as steel.

PVD

PVD is the abbreviation for physical vapour deposition and refers to a modern coating method through which a material, for instance gold, can be transferred in a vaporised form, to a steel or titanium substrate. The result is as fine as it is durable. PVD is resistant, corrosion-resistant and very hard.

Diamonds

Considered to be the king of all gemstones, diamond is the hardest natural material in the world. The quality of diamond is classed according to the “four C's”:

Cut: The more facets the stone has, the more intensely it reflects the light.

Colour: At first sight you might think that diamonds are white. Experts, however, can identify their subtle shades of colour.

Clarity: Almost all diamonds have tiny flaws, called inclusions, which can be seen with a jeweller’s loupe

Carat: The unit indicating the weight of a diamond. One carat is equivalent to 0.2g.

Power reserve for a self-winding mechanical watch

A self-winding mechanical movement depends on the wrist motions of the wearer for its operation. When fully wound, the watch has a power reserve of 38-42 hours. Since the watch's self-winding mechanism is directly linked to the wearer's activity, 10 to 12 hours' wear should be sufficient to generate a power reserve of 20 hours or more, which ensures that the watch will continue to run throughout the night. However, if a watch has not been worn for several days and its power reserve has thus run low, we recommend you wind the watch manually for around 15 rotations of the crown (clockwise) to ensure the best possible rate from the outset.

Tachymeter

A tachymeter is an instrument for measuring speed. It is a chronograph with a graduated dial on which speed can be read off in kilometres per hour based on a 1000 metre distance. How to read the tachymeter: Only the central chronograph seconds hand is used. For longer durations, the indications of the timers (minutes and hours) also count. Example for calculating the speed of a car: The chronograph indicates that the distance of one kilometre has been covered in 30 seconds. The corresponding point on the tachymeter scale indicates 120. The speed is therefore 120 km per hour.

Difference between a self-winding and a manual-winding movement

The difference between these two movements is the way in which the watch is wound. Manual-winding watches must be wound every day by hand using the crown, whereas self-winding watches are wound by an internal rotor which responds to wrist movements

Difference between a chronograph and a chronometer

A chronograph is a timepiece which, in addition to displaying the time, is equipped with a stopwatch mechanism to measure and record elapsed time. Depending on the model, the measured time is shown either by an analogue display with an hour, minute, second and even a 1/10 or 1/100 second hand or by a digital display. A chronometer is a watch that has obtained an official rate certificate from the COSC (Contrôle Officiel Suisse des Chronomètres), which certifies that the movement has passed a range of precision tests in different positions and at different temperatures over a 15-day period. Certification can be granted both for mechanical and quartz movements

Precision tolerances for mechanical watches

The accuracy of the watch depends on the movement and on the individual habits of the wearer and can therefore vary. A qualified watchmaker can adjust the rate precision of a watch to be within tolerances. The majority of watches that do not have a chronometer certificate have average precision tolerances of between -5 / +30 seconds per day. To qualify for the “chronometer” label, a mechanical movement’s average variation in rate must be between -4 / +6 seconds per day

Chronograph

A chronograph is a specific type of watch that is used as a stopwatch combined with a display watch. A basic chronograph has an independent sweep second hand; it can be started, stopped, and returned to zero by successive pressure on the stem. Less simple chronographs use additional complications and can have multiple independent hands to measure seconds, minutes, hours and even tenths or hundreds of a second. In addition, many modern chronographs use moveable bezels as tachymeters for rapid calculations of speed or distance.

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