Kosmos I biorhythm calculator 1970 green VFD USA Taiwan

Specially made for Kosmos International from Atlanta in the USA, but produced in Taiwan. It has a 8 digits, green fluorescent display as well as 6 leds and four specific functions to calculate your Biorhythm. It is tested and works like it should (batteries not included). It comes with the original black sleeve, which is also in very good condition. It measures ca. 7 cm or 2 3/4  inches wide. There are only small signs of use or age. Selling for use again or as a cool desk display piece. Do check the attached video to learn all about the history of the HP calculator.