Seiko UC-2000 The "origin" of smartwatch - YouTube
Detail
From Deep in the Watch Box: The Seiko Data 2000 - Worn & Wound
Reference SLQ007 Sportura | A stainless steel automatic chronograph wristwatch with date, bracelet, and 1/10th of a second, Circa 2000 | Fine Watches | 2023 | Sotheby's
From Deep in the Watch Box: The Seiko Data 2000 - Worn & Wound
SEIKO UC-2000 / 2100 With Keyboard Fantastic NOS Rare | eBay
VINTAGE SEIKO- 7005-2000 R 17 JEWELS AUTOMATIC WATCH - NO BAND | eBay