1 / 8
Rare Vintage Casio W-770 Men’s AlarmChronograph Digital Sports Watch JDM 1980s
■ ONE OF A KIND — THIS IS THE ONLY ONE. ONCE IT SELLS, THIS PAGE BECOMES AN ARCHIVE.
► BUY DIRECT & SAVE 10% — SAME WATCH, NO MARKETPLACE FEES
► SECURE STRIPE CHECKOUT
► FREE US SHIPPING — $30 FLAT INTERNATIONAL
► FREE US SHIPPING — $30 FLAT INTERNATIONAL
► SELLER'S DESCRIPTION
Up for sale is an extremely rare vintage Casio W-770 men’s digital sports watch produced for the Japan Domestic Market (JDM) during the 1980s and powered by Module 548. This model is one of Casio’s most elusive early sports designs and is widely regarded as a foundational reference that influenced the later evolution of the G-Shock line.
The sound is not working on the watch. It does appear to function if the case back is left very loose. The exact issue is unknown. Beyond this the watch is in full working condition and all other features and functions are operating properly.
All parts of the watch are original including the stainless steel bracelet.
The watch is in great physical condition but has signs of use and age. The photos best describe its physical condition and should be reviewed carefully.
This is an exceptionally rare and highly desirable Casio seldom seen on the market. A strong example for collectors and vintage digital watch enthusiasts and a historically important design in Casio’s sports watch lineage.
Key Details:
• Brand: Casio
• Model: W-770
• Module: 548
• Era: 1980s
• Market: Japan Domestic Market JDM
• Display: Digital
• Case Material: Stainless Steel
• Bracelet: Original Casio stainless steel
• Condition: Sound not working unless case back is loose otherwise fully working great physical condition with signs of use and age
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 ►► RELATED TIMEPIECES DETECTED (4)
RECOMMENDATIONS BASED ON BRAND AND MOVEMENT ANALYSIS



