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
Vintage Seiko Sign Table Digital Memory Watch SILVER D409-5009 Works! Very Clean | eBay
Seiko D409-5010 | Liquid Crystal
Seiko Watch Memory Digital Rare D409-5009 Gold Tone Working 1970s - Ruby Lane
Seiko D409-5000 Rare Digital Memory Watch Quartz Mens Watch Authentic Working | eBay
SEIKO - D409-5030 AO. - Digital - Vintage Digital Watch - Digital-Watch.com