1982 Seiko Databank D409-5009. Digital memory watch. The original Smart Watch. : r/WatchExchangeCanada
Vintage Seiko D409-500A Memo-Channel Chronograph Men's Watch JAPAN NEW BATTERY! | eBay
ヤフオク! - Q168-I26-4004◎ SEIKO セイコー D40...
Seiko Vintage Sign Table Memo Data bank - ultra rare - 1983 for Rs.62,089 for sale from a Private Seller on Chrono24
SEIKO - SEIKO セイコー SILVER WAVE シルバーウェーブD409-5030の通販 by キラキラ|セイコーならラクマ
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