Features Anti-magnetic: The movement is unaffected by exposure to strong magnetic fields, even those greater than 1.5 tesla (15,000 gauss). Chronometer: Label given to a watch which has undergone precision tests and received a certificate from an official body (COSC). Date: The day of the month, displayed in a window on a watch dial typically at the 3 o'clock or 6 o'clock position. Screw-in crown: Self-locking crown, screwed into the tube of the case, used for highly water resistant divers' watches. Transparent case back: A transparent case back - frequently made of sapphire - makes it possible to see the movement inside the watch.
This 43 mm Worldtimer model includes a polished case and bracelet in 18K Sedna™ gold. This is the same material used for the hands and indexes.
The exterior section of the opaline silvery dial includes vertical teak stripes and a circle of global destinations printed in red (GMT), blue (+1h in summer) and Sedna™ gold colour (places without daylight savings).
The centre of the dial contains a 24-hour glass ring, with opaline silvery colour to indicate daytime and dark blue to indicate night. The vision of Earth is created on a grade 5 titanium plate. This has been laser-ablated to create the blue ocean, leaving a relief of the continents. The contrasting colours of the Earth’s surface are obtained naturally by the laser’s chemical reaction.Inside, the Worldtimer is driven by the Master Chronometer Calibre 8939.