This watch reinterprets Japans and Seikos first Divers watch from 1965. The original, worn by the Japanese Antarctic Research Expedition from 1966 to 1969, marked Seikos commitment to diving reliability and professional standards. The latest version has a deep scuba blue bezel and matching dial. It meets ISO Diving standards with glow-in-the-dark Lumibrite hands and indices, and a 4:30 date calendar. The bracelet has updated short pitch links, a shorter buckle, and a slimmer 13mm depth. The watch has an in-house 6R55 automatic movement. Powered by the automatic movement with 24 jewels and a power reserve of up to 72 hours. Presented on a silver stainless steel bracelet with fold over clasp. Scratch resistant sapphire crystal glass. 40mm case width. 300 metre water resistance.