Sinn 104 Classic 12 Silicone Watch 104.060 Silicone. Classic design language with refined details: The 104 Classic 12 stands for a distinctive profile combined with technically superior features. A timepiece that skilfully merges the functionality of an instrument watch with the craftsmanship of traditional horology. Its unmistakable appearance bears the hallmark of Sinn Spezialuhren, timeless and full of character.