While Kari Voutilainen's guilloché dials are very attractive on their own, I always thought the bold lines of the "standard" dial design to be Grönefeld's signature design. It matches not only the bold design of the movement bridges but carries on the superb lines combining modern design with traditional watchmaking, created by the British designers Jones & Bowen for the original Parallax Tourbillon and One Hertz models.