Home › References › Grönefeld › 1941 1941 Grönefeld’s core case family, named for the birth year of Bart and Tim Grönefeld’s father Sjef. The sculpted, hollowed case silhouette carries the brothers’ movement architecture across the Principia (automatic), Remontoire (constant-force), and Grönograaf (split-seconds chronograph) references.
Year introduced: 2014 3 references
References in this family enthusiast modern Grönefeld Calibre G-06 -- in-house automatic, 21,600bph, 56h PR, 31j, 226 parts; 22ct solid-gold micro-rotor on a ceramic ball bearing, Swiss lever escapement 39.5mm 2018–present
Open enthusiast modern Grönefeld Calibre G-05 -- in-house manual-wind, 21,600bph, 35h PR (constant force), 36j, 258 parts; one-second remontoire d'égalité (satellite gearing, hypocycloidal gears), hacking seconds; GPHG 2016 Men's Watch category winner 39.5mm 2016–present
Open enthusiast modern Grönefeld Calibre G-04 -- in-house manual-wind, 21,600bph, 48h PR (30h chronograph), 45j, 408 parts; column-wheel chronograph, instantaneous jumping minute counter, soft-reset mechanism; limited to 25 pieces in tantalum ("Premiere Edition") and 188 pieces in stainless steel (213 total) 40mm 2022–present
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