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  2. Around the Watch & Oris
  3. Additional Know-How

Additional Know-How

  • Why are the majority of sapphire crystals only anti-reflective on the inside?
  • What is an anti-reflective coating?
  • How do I know how to set the lunar calendar?
  • What is Plexiglas and where is it used?
  • Where does Oris use mineral glass?
  • What is sapphire crystal?
  • How do I look after my watch, bracelets and straps?
  • What does chronometer mean?
  • Can I use my watch as a compass?
  • How do I use the helium valve on my watch?
  • How do I measure distance with my watch?
  • How do I measure speed with a watch?
  • What is a regulator?
  • How do I know which time zone to set?
  • How do I operate a screw-down pusher?
  • How do I loosen a crown with the Quick Lock (QLC) system?
  • How do I unscrew a screw-down crown?
  • Are standard crowns waterproof?
  • What do the crown positions mean?
  • Can I clean my watch in an ultrasonic device, which is intended for cleaning glasses and jewelry?
  • Are there any Oris watches with solid rose gold hands and indexes?
  • Why is the Divers Sixty-Five listed as a diver’s watch, even thought the water resistance is only 10 bar (100 metres)?
  • How accurate is the depth gauge indication on the Aquis Depth Gauge?
  • Why does the altimeter scale on the ProPilot Altimeter change, even when the crown is locked?
  • How accurate is the ProPilot Altimeter altitude indication?
  • Is it possible to refurbish a DLC coating?
  • What is an alarm watch?
  • Is my watch protected against shocks?
  • What materials or usage could damage my watch?
  • What affects the luminosity of the Super-LumiNova® in my watch?
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