Saturday watch illustration, this one with what in my opinion is probably the first concept of a smartwatch in the '80s: the Seiko UC-2000! This piece would work as a simple digital
Seiko UC-2000 Wrist Information System – Old Crap Vintage Computing
Seiko UC-2000 With Its UC-2100 All Original Keyboard Perfectly Working | eBay
Seiko UC-2100 Keyboard (UK01) | WatchCharts
SEIKO UC-2000 – 20th Century Watches
Vol.2 | by Seiko watch design
Seiko UC-2100 keyboard datagraph | National Museum of American History
The Dream Tiger — Seiko UC-2100, 1984
Seiko UC-2100 keyboard datagraph | National Museum of American History
Seiko UC-2000 Wrist Information System 3-Piece Set (UC-2000, UC-2100, UC-2200) | WatchCharts
Seiko UC-2000 The "origin" of smartwatch - YouTube
SEIKO UC-2000 / 2100 With Keyboard Fantastic NOS Rare | eBay
Seiko uc-2000 watch or computer? | WatchUSeek Watch Forums
SEIKO Uc-2000 Uc-2100 Uc-2200 and Manual - Etsy
Seiko computer watch and controller UC-2000 and UC-2100 with Box Japan Version | eBay