Rare Vintage Seiko Calculator Alarm C359-5000 Men’s Digital Watch JDM 1970s

Up for sale is a rare vintage Seiko Calculator Alarm C359-5000 men’s digital watch, produced for the Japan Domestic Market (JDM) in the 1970s. This highly collectible model showcases Seiko’s early digital innovation and features a built-in calculator keypad design from the golden era of Japanese digital watchmaking. Some of the keypad buttons do not seem to properly engage the calculator functions. I believe this may potentially be corrected through adjustment or cleaning, though this has not been attempted and will be left to the buyer. Beyond this issue all other features and functions of the watch are operating properly. All parts of the watch are original including the original Seiko stainless steel bracelet. The watch shows signs of use and age throughout. The photos best describe its physical condition and should be reviewed carefully. The watch comes in a genuine Seiko box although the box is not original to this specific watch. A very desirable early Seiko calculator model and a great addition for collectors of vintage Japanese digital watches. Key Details: • Brand: Seiko • Model: Calculator Alarm C359-5000 • Module: C359 • Era: 1970s • Market: Japan Domestic Market (JDM) • Bracelet: Original Seiko stainless steel bracelet • Includes: Genuine Seiko box (not original to watch) • Condition: Calculator keypad partially unresponsive; otherwise fully working; signs of use and age Ships carefully. Feel free to message me with any questions.