Is it safe to wear my watch in a Sauna, Jacuzzi or hot tub?

The various components used in the manufacture and assembly of your watch expand at various rates. The rapid change in temperature when entering a Jacuzzi or hot tub could result result in a loss of the sealing capabilities of gaskets, which may allow moisture to enter. In addition, heat from these sources can cause deformation of certain materials leading to mechanical failures. For these reasons, you should remove your watch before entering a sauna, hot tub or Jacuzzi.