Limited Edition of 50 Pieces. Chronoswiss Watch Flying Regulator Open Gear Purple Haze Limited Edition CH-8758.1-PUBK. With the Flying Regulator Open Gear Purple Haze, Chronoswiss takes a colourful step with its regulator set-up on distinctive three-dimensional hybrid dials made of handmade guilloché coated with contemporary materials in strong colours. A modern mechanical regulator timepiece in a purple 41mm DLC-coated case and a mesmerizing purple CVD-coated dial, Chronoswiss Open Gear Purple Haze is not only a bold statement; it is also a celebration of handmade guilloché.