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RARE VINTAGE SEIKO D409-5000 MEMORY DATA BANK DIGITAL LCD MEN'S WRISTWATCH WORKS | WatchCharts
Benj Edwards on Twitter: "Seiko D409 (1983), the first mass-produced databank watch, could store 112 chars in memory. Users typed via stylus. http://t.co/x1N7qyikjh" / Twitter
Seiko D409 - 5000
Seiko D409-5000 Rare Digital Memory Watch Quartz Mens Watch Authentic Working | eBay
Seiko D409-5000 Rare Digital Memory Watch Quartz Mens Watch Authentic Working | eBay
Seiko Watch Memory Digital Rare D409-5009 Gold Tone Working Condition Vintage | eBay
Just got my hands on a vintage [D409-5000] Seiko memory watch. This beauties a bit beat up yet fully functional. But I haven't been able to find a single manual online regarding