Seiko Chronos Quartz - Ref. 7731-6000 - 1983 To understand this watch properly, it helps to know that the name "Chronos" has real historical weight inside Seiko. The origin of the Chronos name goes back to 1958, when Daini Seikosha in Kameido introduced the Cronos, the first three-hand men's watch made at that factory. It was developed as a thinner, higher-performance alternative in Seiko's internal technical rivalry, and its slim, precise design philosophy was later inherited by King Seiko and even by the famous 44GS design lineage. In other words, Chronos was not just a model name - it belonged to an important stream in Seiko's development history. This watch is a much later quartz Chronos, produced in the early 1980s, carrying that historic name into the quartz era. Rather than presenting itself as a flashy sports watch, it expresses the Chronos identity in a more restrained way: slim, elegant, practical, and quietly refined. The present example features a clean silver dial with a textured central section, giving the watch more depth and character than a plain flat dial. The gold-tone hands and indices provide a warm contrast, while the small gold-tone accents around the bezel add a subtle dressy touch without becoming excessive. The case construction is also attractive: a stainless steel case combined with an SGP gold-plated bezel, as confirmed by the caseback markings. This combination creates a classic two-tone look that suits the refined dress-watch character of the model. Production year Based on the serial number 340574, this watch is best identified as having been produced in April 1983. This matches the known production period of the Seiko 7731 quartz movement, which belongs to the 1980s. Specifications Brand: Seiko Model: Chronos Quartz Reference: 7731-6000 Movement: Seiko Cal. 7731 Quartz Year: 1983 Dial: Silver dial with textured centre Case: Stainless steel Bezel: SGP gold-plated bezel Case diameter: Approx. 34.0 mm excluding the crown Strap: Brand-new black leather strap Caseback markings WATER RESISTANT ST. STEEL STEEL SGP BEZEL JAPAN-A 7731-6000 [A3] Condition The watch has been cleaned. Please examine the photos carefully, as they form an important part of the description. The watch was running at the time of listing. Accuracy not tested. As this is a vintage quartz watch, accuracy, water resistance, and remaining battery life are not guaranteed. The watch will be carefully packed and shipped with tracking for safe delivery. Please look forward to its arrival.