SEIKO Presage Classic Series Open Heart in Ai-iro Japanese Blue Automatic | SPB527From the Presage Classic Series watches designed with inherent Japanese elegance, this watch is named Ai iro for its indigo dial a colour loved during Japans Edo period between 1603 and 1868. Ai iro was regarded as a lucky colour to Samurai warriors during the Meiji era of 1868 to 1912, towns would cover themselves in the colour, leading foreign countries to name it Japan Blue. Its dial texture is inspired by soft silk a popular Japanese material