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 exclusively for the Japan Domestic Market (JDM) during 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. The watch is in full working condition, and all features and functions operate properly. The battery cover on the case back spins a bit more freely than normal but should not come off during regular use. It can be seated more firmly by installing a new O-ring, though this has not been done and will be left to the buyer. The watch is fitted on an aftermarket stainless steel bracelet. All other parts of the watch are original. The watch is in good vintage physical condition with signs of use and age throughout. The photos best describe its physical condition and should be reviewed carefully prior to purchase. Key Details: * Brand: Seiko * Model: Calculator Alarm C359-5000 * Module: C359 * Era: 1970s * Market: Japan Domestic Market (JDM) * Movement: Digital Quartz * Display: LCD Digital * Bracelet: Aftermarket stainless steel bracelet * Condition: Full working condition. All features and functions operate properly. Battery cover spins a bit freely but remains secure during normal use and can be seated more firmly with a new O-ring. * Originality: All other parts original * Physical Condition: Good vintage physical condition with signs of use and age A very desirable early Seiko calculator model and a fantastic addition to any collection of vintage Japanese digital watches. Ships carefully packaged. Feel free to message me with any questions.