Sapphire is currently the hottest material for watchcases, although only a forward-thinking few daringly use it. Among those is
that unveiled the BR-X1 Tourbillon Sapphire at Baselworld 2016. The iconic square watchcase boasts a see-through crystal that’s made of nine blocks of sapphire. It’s no secret that the watchcase took a long time to create—sapphire is the second hardest material after diamond, after all. But what goes on inside the dial is no less fascinating. There is a chronograph function with pushers on the right side of the case, and a minute sub-dial at 11 o’clock, too. This 45mm ticking masterpiece is also remarkably long-lasting with a power reserve of 100 hours or approximately four days.