One Hertz Fire / Grönefeld

The Grönefeld One Hertz Fire comes in a titanium case with striking orange accents. It is a new variation on the One Hertz watch introduced by Grönefeld last year. The One Hertz features a rare complication called dead beat seconds, which means that the seconds hand, which has a prominent place on the dial, makes one tick per second — much as a quartz watch would, but it is achieved through mechanical means — via Perpetuelle