Grönefeld One Hertz with Independent Deadbeat Seconds
The Grönefeld One Hertz is the second complicated mechanical timepiece created by Swiss trained, Netherland based watchmaking brothers, Bart and Tim Grönefeld. The movement for this new timepiece, was created completely in-house. The dial indicates hours and minutes on a sub-dial at 2 o'clock. Power reserve is indicated at 12 o'clock. But what really makes this timepiece standout, is the deadbeat seconds, which is indicated by the large off-centre sub-dial. Independent deadbeat seconds, rotate the dial (independent means the seconds are displayed in the sub-dial) by ticking forward, much like on a traditional quartz movement. Except that this is, of course, a mechanical movement, which really makes it complicated to produce. In fact, this is the world's first and only mechanical timepiece with independent deadbeat seconds.