|Batteries:||AA x 2|
The Casio H-801 Biolator is a calculator with the basic functions
but with one special extra. It can calculate your "Biorhythm". Now
don't ask me what good that does, but apparently it tells you how
good you feel on a specific date.
This calculator apparently was a huge success for Casio and sold very well.
©2023 Ernst Mulder