Gronefeld released the world’s first production wristwatch with independent dead seconds, the One Hertz Platinum. For 2012, the One Hertz Platinum comes in a limited edition of 10 pieces.
Gronefeld began the watchmaking business in 1912. Since then, it has been a family-run company with brothers, Tim and Bart Gronefeld, at the helm today. A dead-beat watch is a mechanical watch with a ticking seconds hand. The brothers’ expertise in the world of the tourbillion and the minute repeater watch led to the development of the One Hertz and its dead-beat seconds complication.
The One Hertz, meaning one cycle per second, launched in 2010 with the One Hertz 1912, a limited edition steel watch of 12 pieces. The One Hertz Dune arrived in 2011 in a red gold limited edition of 20 pieces. For 2012, the One Hertz Platinum was released in honor of Tim and Bart’s grandfather who launched the watchmaking business a century ago.
The One Hertz Platinum comes in a gorgeous platinum case with a pleasing blue dial that blends the two colors well. It has an indicator for hours and minutes on a sub-dial at 2 o’clock and a large sub-dial for the dead seconds. There is a power reserve indicator at 12 o’clock with an “S” for setting mode or a “W” for winding. The One Hertz has a unique crown that you press in to change its mode instead of pulling it out. The G-02 caliber completes one operation per second which explains the name “One Hertz.”
It is fascinating and complicated how a dead seconds mechanism functions. In order to keep the friction of the mechanism at its most minimal, Gronefeld used an independent dead seconds device. It has its own power supply and is driven from its own secondary gear train. The seconds and minutes have independent mainspring barrels to minimize friction. The difficulty and expertise behind this concept is apparent and brilliant as this timepiece involves 285 parts.
Gronefeld is a company that has earned a stellar reputation and the respect of the watchmaking world. Though the One Hertz Platinum may be difficult to obtain in its 10 piece limited edition, it is a luxury watch that was made with “passion and patience.” As the Gronefeld brothers state, “Luxury wristwatches are mostly in demand for the emotion they offer.” It is certain that the owner of any one of the Gronefeld One Hertz watches will be proud and emotionally attached to their special timepiece.