Grönefeld: One Hertz Techniek” – or black DLC coated – “One Hertz Techniek Nocturne
I have met Tim and Bart Grönefeld last year at Baselworld. Two very spirited and creative men who
created the world’s only series wristwatch with independent dead seconds, featuring a stunning, open-work dial that showcases the intricate upper mechanics of Grönefeld’s own proprietary movement, the calibre G-02.
I think that I have to find time to visit them in Oldenzaal to see their work and tell you about it.
With the One Hertz and its unique secondary gear train, Bart and Tim Grönefeld resurrected the long-neglected complication of dead seconds – where the second hand advances in full steps of one second instead of the usual smooth sweeping action of mechanical seconds – and re‑positioned it on the pedestal of high precision.
The Grönefeld One Hertz is unique among wristwatches in that its dead seconds are powered by a secondary gear train, independent of the gear train for the hour and minute indications.
The open back, a pleasure for your eyes:
Bart and Tim Grönefeld chose the name ‘Techniek’ for a very simple reason. The Dutch watchmakers say:
“Here, we have made the One Hertz’s movement and mechanics more visible than ever with an open-work dial. The technicality of the movement is really on show, so we called it the One Hertz Techniek, because ‘techniek’ is the Dutch for ‘technical’.”(From Pressrelease of Grönefeld))
(Information and pictures from Grönefeld Pressrelease))