Grönefeld

The Grönefeld brothers, Tim and Bart, have been friends with Kari Voutilainen since the early 1990s. According to Grönefeld, the two companies would often share booths at important watch fairs around the globe. And now they are officially collaborating together, by way of Voutilainen producing bespoke engine turned (guilloché) dials – two of which are shown here – for a limited number of Grönefeld 1941 Remontoire timepieces. Grönefeld is able to offer a wide array of color and pattern options for the dial, all featuring guilloché-work. And there is even an option to add enameling on top of the guilloché motif as well. The dials are made on a very old rose-engine that requires the expert skill of someone like Voutilainen, who is world renowned for producing this type of dial. Each dial can take up to two days to

At Basleworld, next month, independent Dutch watchmaking brothers, Bart and Tim Grönefeld, will unveil a new timepiece, highlighted by an eight-second constant force mechanism that ensures that the power delivery never fluctuates from the point that the mainspring is fully wound (36-hours) until it is completely unwound. This leads to consistent rate and amplitude, and excellent precision. The inspiration for the creation of the Grönefeld 1941 Remontoire came from the brother’s childhood, where they played to the sounds of the Saint Plechelmus church clock, which was maintained by their grandfather, Johan Grönefeld, until he passed away, at which point their father, Sjef Grönefeld, took over the duties. According to the manufacture, “The church clock, created in 1913 by Royal Eijsbouts in the village of Asten, The Netherlands is equipped with a remontoire mechanism. The rationale for the remontoire being used

Building on the momentum from the Grönefeld One Hertz, which won Time Zone’s watch of the year award last year, Bart and Tim Grönefeld have launched a new model — the One Hertz Techniek. It is an open-work dial version of the One-Hertz, the world’s only series wristwatch with independent dead seconds. Presented in a polished and brushed titanium (or a grade 5 titanium DLC case) the One Hertz Techniek and Techniek Nocturne, respectively, come in the same case dimensions, and have the same in-house caliber G-02 movement as the original One Hertz, now in a stunning skeleton dial. If you liked the original, then you are likely going to love this one.

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.