UC2000] 1984 Seiko computer watch, the first ever released I believe. Comes with a keyboard to plug it in to (which is don't have unfortunately) : r/ Seiko
SEIKO UC-2000 / 2100 With Keyboard Fantastic NOS Rare Needs Battery | eBay
[Seiko] UC-2000 Computer watch. Watch out Apple… : r/Watches
Seiko uc-2002 (1985) - Seiko - LastDodo
SEIKO UC-2000 first computer watch by seiko 1975' #seiko #… | Flickr
Seiko Originals: The UC-2000, A Smartwatch from 1984 – namokiMODS
FS:Vintage Seiko UC-2000 NOS | WatchCharts Marketplace
UC2000] 1984 Seiko computer watch, the first ever released I believe. Comes with a keyboard to plug it in to (which is don't have unfortunately) : r/ Seiko
SEIKO UC-2000 UW01-0010 LCD Chronograph Alarm vintage watch quartz NOS NEW | eBay