Remontoire:
To optimize time keeping a small hairspring is wound every 8 seconds to guarantee a constant force for the escapement. A complex satellite gearing mechanism with hypocycloidal gears, twin ball bearings, pinions and jewelled levers, achieve this.
Balance wheel:
Variable-inertia balance wheel with four white gold timing screws (diameter 10 mm)
Frequency:
21.600 vibrations/hour
Balance spring:
Free sprung with Phillips terminal over coil curve with triangle hairspring stud
Escapement:
Jewelled Swiss lever
Main Plate:
Spotted and ruthenium electroplated brass main plate
Bridges:
Stainless steel, bevels polished by hand, micro-blasted centre
Circular grain on the top to highlight the bridges shapes and engravings
Relief engraved Grönefeld logo, number of jewels and eight seconds remontoire
Hacking seconds:
In setting mode the hacking seconds mechanism will be activated
Displays:
Central Hours and Minutes
Small Seconds at 6 o’clock
Governor speed regulator at 9 o’clock
Case and Dial specifications
Number of components:
66 parts
Case:
White Gold Au750/Pd150 (Non Rhodium plated) or Red Gold Au750 5N
Domed sapphire crystal on the front with hard antireflective coating on both sides
Flat sapphire crystal on the back with hard antireflective coating on both sides
Engraving: Grönefeld and the individual number
8 White gold security screws
Case dimensions
Diameter: 39,5 mm
Thickness: 10,5 mm
Water resistance:
3 atmospheres – 30 meters – 100 feet
Crown:
White gold Au750/Pd150 (Non Rhodium plated) / Red gold Au750 5N engraved with logo
Dial:
Sterling Silver 925, frosted and satin-grained surfaces
Hands:
Extended Lancette hands. Flame-blued steel and mirror polished centres. Small poised seconds hand
Strap:
Hand-sewn ostrich leather with White Gold Au750/Pd150 or Red Gold Au750 5N buckle Engraved with Grönefeld logo
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