Tide Indication | IWC SchaffhausenThe tide indication of the Portugieser Yacht Club Moon & Tide shows the slightly shifting time for the next high tide on the dial. & displays the next high water.??Watch Detailscase18 ct 5N gold caseDiameter 44.6??mmHeight 13.4??mmScrew in crownSee-through sapphire glass backWater resistance 6.0 barMovement82835 CalibreIWC-manufactured movementAutomatic winding60 hours power reserveFrequency 28'800 VPH (4 Hz)228 Components25 JewelsC???tes de Gen???veFeaturesCentral hacking secondsPellaton automatic windingSapphire glass, convex, antireflective coating on both sidesDate displayTide indication, double moon phase for the northern and southern hemisphere with integrated display of neap and spring tide??