Colour time wrist watch, designed by Tian Harlan, manufactured by Chromachron. 1e edition 1988 with book about colour time in 4 languages. The book and watch are in great condition. The plastic casing has a tear. The watch battery was replaced in December 2018. Black leather band. The diameter of the clock is 32mm. The full length is 230mm (buckle, band and clock) The watch case and buckle are gold coloured. Sapphire glass in front, not scratched. The watch infront mentioning Chromachron on top, Swiss made at the bottom. The back of the watch has a scratch. Tekst on the back: Edition Tian Harlan Chromachron Swiss PAT No 613 587 REF. No: CC II - URO 10 20m Waterresistant Sapphire glass 1600 Swiss made Quartz