In the early 1970s, when watches with quartz movements began to spread, designers were searching for a design that would give a sense of “quartz-like luxury.” One of their quests was figuring out how to make the dials of analogue quartz watches, whose hour and minute hands were much thinner than their mechanical counterparts, more colorful and legible. As the technology for cutting indexes improved and the shape and brilliance of indexes became more varied, the designs became more diverse. In the late 1970s, models with gradation-colored dials and polyhedral cut glass became popular among young people. Bracelet design variations also increased, and the variety of watches became more and more diverse.