Movement
Calibre G-04
Movement dimensions Diameter: 32,0 mm Thickness: 6,15 mm
Number of parts 408 parts
Power reserve 48 hours
Power reserve chronograph 30 hours
Number of jewels 45 jewels, partially set in solid gold chatons
Chronograph Column wheel, instantaneous jumping minutes and a soft reset mechanism
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 Geneva style 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 and the number of jewels
Governor Governor Speed Regulator at 3 o’clock
Case and dial
Case dimensions Diameter: 40,0 mm Thickness: 11,3 mm
Water resistance 3 atmospheres – 30 meters – 100 feet
Material Stainless Steel, limited Edition of 188 pieces
Crown Stainless Steel, engraved with The Horological Brothers logo
Dial Stainless steel base with rhodium plated sub-dials and elements, frosted and satin-grained surfaces.Decentral hours and minutes at 1 o’clock.Subdial for seconds at 9 o’clock.Power Reserve indicator at 11 o’clock.Large central seconds counter.30 minutes counter at 6 o’clock.Visible “return to zero” speed regulator at 3 o’clock
Hands Extended Lancette hands for hours and minutes. Poised Breguet style chronograph hands. Flame-blued steel and mirror polished centres
Strap Buffalo leather.20mm-18mm
Buckle Pin buckle made in Stainless Steel engraved with Grönefeld. 18mm
Crystals Domed sapphire crystal on the front with hard anti-reflective coating on both sidesFlat sapphire crystal on the back with hard anti-reflective coating on both sides
Number of components Case: 36 partsDial/hands: 40 parts
Total weight Stainless Steel 85 Grams