Chemicals: Chemicals are obviously harmful to your watch and may damage the case, remove plated finishes, attack the water resistant seals or discolour leather straps. Substances to avoid contact with are petrol, thinners, nail polish, perfume, cosmetics, cleaning products, glue and paint as they can all cause damage to the finish of your watch.
Magnetic fields: Magnetic fields can damage your watch as well. You should avoid placing your watch on or near machines such as loud speakers and refrigerators as the magnetic fields they generate could damage it.
Push-in crown: You should ensure that the crown is always pushed in to the neutral position to avoid humidity getting into the watch.
Shocks: Although some watches are shock resistant, it is still advisable to keep your watch working perfectly to avoid exposing it to shocks as far as possible – such as dropping it or knocking it against hard objects. Sudden and extreme changes in temperature is another form of shock that should also be avoided.
Leather straps: We specifically mention leather straps under special care as it is a natural product and needs to be carefully cared for in order to preserve its beauty. You should protect your leather strap from water, perspiration, damp, grease, perfume, cosmetics and chemicals. You should also avoid excessive exposure to the sun which can cause your leather strap to crack. Periodically treating your strap with a leather care product will help it keep its supple feel and its beautiful appearance.
Extreme temperatures: Just like most humans, your watch will also not appreciate sudden extremes. Your watch is a delicate precision instrument and should not be exposed to extremes of temperature. You should avoid leaving your watch in extremes of heat for any length of time, and should not expose it to direct sunlight. Very hot temperatures may result in malfunctions, particularly in battery operated watches, whilst extremely cold temperatures below freezing can cause considerable lack of precision. Thermal shock can be particularly damaging to your watch and should be avoided, for example taking your watch straight from sun exposure to underwater can result in the glass shattering.
Screw-in crown: Normally found on waterproof watches, you should always ensure that the crown is fully screwed in to avoid humidity getting into the watch. Always check the crown before swimming with your watch as it will not be waterproof unless it is fully screwed in.