Details:

I bought this creditcard-size (85 x 53 x 4mm) multifunction device in the early 90’s.

The battery used is a CR2025  

Usage:

The assets page contains a link to the English language part of the manual.

Click to view a full size picture (opens in a new tab)

Serial number:

Built in:

Functions:

Market-introduction:

Production until:

Price:

?

1991?  My version came with a manual containing an example using the year 1991.

Basic calculations,  clock/calendar,  telephone directory,  schedule and alarm

1991?  

?

?