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Rare Vintage Casio SDB-300W Lap Memory 30 Men’s Digital Sports Watch JDM 1980s

DIRECT PRICE — SAVE 10%
EBAY PRICE$325.00
DIRECT -10%$292.50
■ 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 rare vintage Casio SDB-300W Lap Memory 30 men’s digital sports watch, produced for the Japan Domestic Market (JDM) in the 1980s and powered by Module 503. This model is part of Casio’s early performance-focused digital lineup and is known for its lap memory functionality, bold case design, and highly practical sports timing layout. The watch is in full working condition, and all features and functions operate properly, including timekeeping, calendar, alarm, stopwatch, lap memory, and backlight. The watch is currently fitted with an aftermarket strap. The watch shows signs of use and age consistent with a vintage timepiece. The photos best describe its physical condition, so please review them carefully. Key Details: • Brand: Casio • Model: SDB-300W • Module: 503 • Series: Lap Memory 30 • Era: 1980s • Market: Japan Domestic Market (JDM) • Functions: Time, calendar, alarm, stopwatch, lap memory, backlight • Strap: Aftermarket strap • Condition: Fully functional; shows signs of use and age; photos best describe condition An extremely rare and hard-to-find Casio sports digital, especially desirable for collectors of vintage JDM Casio performance models. 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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