Seiko Prospex 1965 Revival Diver's 3-day 300m in Scuba Blue. This watch is a modern take on Seiko’s first Diver's watch from 1965, which set the standard for diving reliability and safety. The original was worn by the Japanese Antarctic Research Expedition (1966-1969), proving its durability. This version features a 40mm stainless steel case, sapphire crystal, and a deep blue bezel and dial. It meets professional ISO Diving specifications, with glow-in-the-dark Lumibrite hands and indices, and a date calendar at 4.5 o'clock. The bracelet has short pitch links and a shorter buckle for comfort, and the watch is slimmer at 13mm depth. Powered by the in-house 6R55 automatic movement, it offers a 72-hour power reserve, is accurate to -15/+25 seconds per day, and has a 300m water resistance.