Limited Edition of 50 Pieces. Chronoswiss Watch Open Gear ReSec Jungle Limited Edition CH-6923-DGRBK. This Chronoswiss watches timepiece combines a 17th century invention with contemporary design while taking handmade guilloche to the next level. The wavy, moire pattern on this timepiece is inspired by the blue hour in a tropical jungle, its vivid colours changing seamlessly from lush green to silver blue and shadowy black. The spiralling pattern designed to resemble palm leaves and executed in a limited edition of 50 timepieces, utilises a technique unique for Chronoswiss: handmade guilloche coated with chemical vapour deposition.