The Longines Master Collection, 42mm, Silver, Stainless Steel

• Magnetic fields: avoid putting your watch on a loudspeaker or on a refrigerator because these machines create magnetic fields that may damage it.
• Salt-water: always rinse your watch in fresh water after swimming in the sea.
• Shocks: avoid subjecting your watch to shocks, including sudden changes in temperature.
• Screw-in crown: always make sure you have screwed the crown in fully to avoid any humidity getting into the mechanism.
• Push-in crown: always push the crown back in to the neutral position to avoid any humidity getting into the mechanism.
• Cleaning: use a toothbrush and soapy water to clean metal bracelets and water resistant cases and a soft cloth to dry off afterwards.
• Chemical products: avoid all direct contact with solvents, detergents, perfume, cosmetics, etc. which may damage the bracelet or strap, the case or the seals.
• Temperatures: avoid exposing your watch to extreme temperatures (over 60 ° C or 140 ° F and under 0 ° C or 32 ° F) and to sudden fluctuations in temperature.
• Water-resistance: we cannot guarantee that your watch will be permanently water resistant. The seal may be affected by wear or by an accidental shock to the crown.
As recommended in our service instructions, you should have the water-resistant seals of your watch tested once a year by an approved Longines agent.
• Chronograph push-pieces: do not adjust the pushpieces under water as this may allow humidity to get into the mechanism.

Yes, we can supply the following information depending on what we are able to find in our archival records:
• Type of watch and material
• Type of movement
• Invoice date
• Name of che invoiced dealer
• Destination country
• Model reference number
• Model name or name of collection it belongs to
• Suggested retai l price at the time of model launch

Depending on the watch, only some of this information may be available; we only give out information when we have corroborating sources.
In order for us to carry out research on your watch, we require the following information:
• A description of the watch (type of watch, material, etc.)
• Watch serial number in addition to any numbers and markings engraved on the watch, specifying where the engraving can be found
• A few good quaIity photographs (face. reverse, if possible the inside of the case back and the movement) that will easily allow us to see all of the engravings on the watch.

The Longines museum explores over 180 years of watchmaking history and is open to the public on working days from 9 a.m. to 12 p.m. and 1.30 p.m. co 5 p.m.
During a 90 minute guided tour, visitors can discover the brand’s main watches, navigational instruments and timing devices, as well as a range of exceptional
photographs, posters, films, medals, and archival records.