Grönefeld Introduces The One Hertz Techniek and Techniek Nocturne



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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