Grönefeld Exclusive Timepieces announced that its new self developed masterpiece, One Hertz watch, will be reveled on the world biggest watch fair, in Basel. The Grönefeld One Hertz is the only wrist watch, with an independent deadbeat seconds mechanism.
Small independent Dutch watchmakers, Tim and Bart Grönefeld, recently finished a construction of their new caliber G-02 movement, featuring unusual deadbeat seconds complication. This means that the seconds hand of the watch runs with a speed of 1 hertz, which is one cycle per second. Actually, this feature isn’t something new. It was pretty reputable until the 1980s.
However, the Grönefeld brothers made it unique, with the perfect solution of the problem about its power supply. They constructed two separate gear trains, one for deadbeat seconds and another that powers hour and minute indications. Highest precision of the One Hertz second hand is insured by the separate mainspring, which provides minimum friction of a mechanism. The G-02 movement also incorporates a power and set indicator and a Variable Inertia Balance wheel.
Innovative power and set feature (also called push-to-set/push-to-wind” function) provides easy shift between winding a timepiece and time setting, by simply pressing, instead of unscrewing the crown.
Design of the Grönefeld One Hertz watch is simple and modern. It is created to highlight the extraordinary mechanism, which is dedicated to real haute horlogerie aficionados. For that reason, watch face has two sub-dials. Smaller hours and minutes sub-dial is at 2 o’clock, while a large sub-dial for deadbeat seconds takes the central part of the watch dial, with a power reserve indicator and a setting-winding indicator.