Seiko Originals: The UC-2000, A Smartwatch from 1984 – namokiMODS
SEIKO UC-2000 / 2100 With Keyboard Fantastic NOS Rare | eBay
Seiko UC-2100 keyboard datagraph | National Museum of American History
European Society for Computer Preservation - The Seiko UC-2100 Keyboard module, with docking area for the wrist watch module, manual, and original package. | Facebook