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Rare Vintage Casio Casiotron Universal Calendar 79CS-51 Digital Watch JDM 1970s

DIRECT PRICE — SAVE 10%
EBAY PRICE$199.00
DIRECT -10%$179.10
■ ONE OF A KIND — THIS IS THE ONLY ONE. ONCE IT SELLS, THIS PAGE BECOMES AN ARCHIVE.
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BRAND:
Casio
UNIT CONDITION:
Pre-owned - Good
► SELLER'S DESCRIPTION
Up for sale is a vintage Casio Casiotron Universal Calendar men’s digital watch, model 79CS-51, a Japan Domestic Market (JDM) release from the 1970s powered by Module 79. This early Casio digital timepiece is historically significant, representing one of the brand’s pioneering designs that helped define the digital watch era. The watch is in full working condition, and all features and functions operate properly, including timekeeping, alarm, chronograph, signal, and the Universal Calendar. All parts of the watch are original, including the stainless steel case and signed Casio bracelet. The watch is in good physical condition overall, showing signs of use consistent with age. Please review the photos carefully, as they provide the best representation of its physical condition. Key Details: • Brand: Casio • Model: Casiotron Universal Calendar 79CS-51 • Module: 79 • Era: 1970s • Market: Japan Domestic Market (JDM) • Features: Time, Alarm, Universal Calendar, Chronograph, Signal • Bracelet: Original Casio stainless steel bracelet • Case Material: Stainless Steel • Condition: Full working condition; good physical condition with signs of use A rare and collectible early Casio digital watch, perfect for enthusiasts of vintage Japanese timepieces and retro digital technology. Ships carefully. Feel free to message me with any questions.

► ARCHIVE FILE: CASIO — BRAND HISTORY

Casio began not with watches but with calculation. Tadao Kashio founded Kashio Seisakujo in Tokyo in 1946, and with his three brothers developed the 14-A in 1957, the world's first compact all-electric relay calculator, incorporating the business as Casio Computer Co. that same year. The move into watchmaking came in November 1974 with the Casiotron, a digital watch whose claim to fame was an automatic calendar that knew how many days each month had, a small feat of logic that announced how an electronics firm would approach timekeeping.

Read the full Casio story — and shop all Casio watches ►

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