Founded in 1881, Seiko is one of the world's most prestigious manufacturers of timepieces; indeed, the name Seiko means "exquisite" in Japanese. The Seiko Prospex, or "Professional Specification", is a range created for both sports lovers and adventure seekers, featuring both the symbolic design and original spring drive which has led the way on global standards for safety and reliability.
It was in the 1960s that scuba diving really took off, and the ability to accurately time your dive became a vital element of the sport. Watchmakers were caught up in the rush to create the most precise timepieces, and Seiko truly cornered the market with their original Prospex Sea model, a robust, high-specification automatic. A titanium case, in place of the standard steel, combined with the revolutionary idea of placing a quartz movement alongside Seiko's own industry-respected mechanics, gave the Prospex the added edge in accuracy and sturdiness.
Created in 1965, the Seiko Prospex was Japan's first watch specifically for divers, designed for use by the Japanese Antarctic Research Expedition (which gives you some idea of the toughness of this model!). The automatic movement, whereby the natural motion of the wearer constantly winds the mainspring and keeps the watch ticking, combined with water resistance of up to 150m, meant it was one of the most reliable and desirable watches for diving professionals and sports people in general.