Watches

Grönefeld Introduces The One Hertz Techniek and Techniek Nocturne

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Dutch watchmakers Tim and Bart Grönefeld present two new additions to the One Hertz lineup, the Techniek and Techniek Nocturne, the world’s only series wristwatch with independent dead seconds.

“Here, we have made the One Hertz’s movement and mechanics more visible than ever with an open-work dial,” they say. “The technicality of the movement is really on show, so we called it the One Hertz Techniek, because ‘techniek’ is the Dutch for ‘technical’.”

The “One Hertz Techniek” is a limited edition of 30 pieces in Grade 5 titanium, with either a natural finish – “One Hertz Techniek” – or black DLC coated –“One Hertz Techniek Nocturne”. No word on price yet , we will update you on price and availability when this information becomes available. For more info, visit Gröenfeld’s website.

Technical Specifications:

Features and indications
Independent dead seconds large dial at 7 o’clock
Hour and minutes subdial at 2 o’clock
Power reserve indicator at 11 o’clock
Innovative Winding-Setting mechanism
Winding-Setting indicator at 3 o’clock
In-house calibre G-02

Case and dial
Case material: Grade 5 polished and brushed titanium and black DLC (Diamond Like Carbon) coating
Engraving: “Titanium”, “Limited 30 pieces” and the serial number
Screws: Stainless steel security screws
Case dimensions: 43 mm x 12.5 mm
Sapphire crystals: Top domed with antireflective treatment both sides; flat display back with antireflective treatment on both sides
Water resistance: 3atm/30m/100 feet
Crown: Titanium, black DLC coated with engraved “G” logo and push to set/wind function
Dial: Stainless steel open dial. Relief engraved, bevelled and finished by hand
Hands: Hours and minutes, large counter-poised seconds, power-reserve and setting-winding
Strap and buckle: Hand-sewn matte black, alligator leather with steel tang buckle black DLC coated (Nocturne), Grönefeld logo

Movement
Calibre G-02: Mechanical hand winding, independent dead seconds, power reserve indicator and setting mechanism indicator.
Dimensions: 34mm x 9.5 mm
No. of parts: 285
No. of jewels: 39 jewels set in gold chatons
Power reserve: 72 hours
Barrels: 2 barrels, one for the going gear train and one for the independent dead seconds mechanism. Both barrels are wound at the same speed and in the same direction
Balance wheel: 9.12 mm free sprung variable inertia balance wheel Balance frequency: 21’600 bph / 3Hz
Balance spring: Phillips terminal overcoil curve, triangle-style stud
Escapements: Swiss lever escapement and unique dead seconds escapement
Main Plate: Hand frosted and spotted black rhodium plated nickel silver
Bridges: Stainless steel hand bevelled, micro-blasted, circular grain on the top, relief engraved on micro blasted surface
Gearing: 2 independent gear trains each with their own energy sources (2 barrels)
Dead seconds mechanism: Independent mechanism, cam with 30 teeth on the going gear train on the fourth wheel, escape wheel on the fourth wheel of the independent gear train, unique double lever with 4 jewelled pallets
Winding-Setting mechanism: Push function crown for winding or setting
Power reserve mechanism: Classic Breguet style by means of a cone moving up and down on the threaded barrel arbour

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