Citizen MB-280

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.

Calculator Info
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Serial number:

Build in:

Functions:

Market-introduction:

Production until:

Price:


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

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

1991?  

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Assets: adverts, brochures, etc