Press release: One_Hertz_press-release_2011
One Hertz 1912 front-back
One Hertz 1912 face
One Hertz 1912 front
One Hertz 1912 back
One Hertz movement side
One Hertz Dune front-back
One Hertz Dune face
One Hertz Dune front
One Hertz Dune back
G-02 detail balance
Movie calibre G-02
Movie dead-beat seconds
Calibre G-02 movement
Calibre G-02 drawing
Press release: EnglishDeutsch
Brochure: EnglishRussian
GTM-06 platinum 950
GTM-06 Platinum 950
GTM-06 Rose Gold 4N
GTM-06 presentation box
Atelier Grönefeld
Tourbillon Assembling
Bart Grönefeld
Tim Grönefeld
Bart and Tim Grönefeld
Tim Tourbillon-cage
Bart beveling
Bart measuring
Bart minute-repeater
Bart and Tim designing
Bart checking wheels
The Grönefeld building
