Rare Seiko Instruments Ruputer Pro, also known as the OnHand PC – a pioneering Japanese wrist computer from the late 1990s. Features a large 52.6mm digital display, multiple function buttons, and PC connectivity via docking station. Includes original dock, cable, and software CD.
This model represents an early era of wearable computing, making it highly collectible among watch enthusiasts, retro tech fans, and vintage gadget collectors.
Brand: Seiko Instruments Inc. (SII)
Model: Ruputer Pro / OnHand PC
Era: Late 1990s – early 2000s
Case Size: 52.6mm (approx)
Thickness: 17.9mm (approx)
Case Material: Stainless steel & plastics
Movement: Digital wrist computer (requires PC connection for full features)
Strap: Replacement Casio strap
Wrist Size: adjustable
Battery: CR2025 x2 (as marked on caseback)
Functions: Watch, scheduler, stopwatch, memo, games, apps (expandable via PC)
Condition: Vintage pre-owned – light wear, fully operational (see photos)
Inclusions: Watch, original dock, cable, software CD
A highly collectible example of early wearable tech and Japanese innovation. Perfect for collectors of Seiko, retro gadgets, or rare digital watches.
