Datejust 31 diamond education With its tachymetric scale

With its tachymetric scale

Domed sapphire crystal

The bracelet attaches to the watch case and the Oysterlock safety clasp by a flexible titanium and nickel alloy metal blade

John Hardy sterling silver woven chain bracelet featuring fresh water pearls separated by silver stations

Datejust 31 diamond education With its tachymetric scaleBright blue dial The sunray finish creates delicate light reflections on many dials in the Oyster Perpetual collection. It is obtained using masterful brushing techniques that create grooves running outwards from the centre of the dial. Light is diffused consistently along each engraving, creating a characteristic subtle glow that moves depending on the position of the wrist. Once the sunray finish has been completed, the dial colour is applied using