Certina Biostar Electronic (1974)
Ref. 7501 001 | Calibre Certina 28-353 (ESA 9154) | Diameter 39mm
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This model, which measures your biorhythm, is a worthy representation of the roaring 70's. During this decade there was a huge interest in mankind and his well-being. Certina invested in a wristwatch with an ideal fit to the anatomy of the hand, the Certina Revelation, and in the Certina Biostar.
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German ad 1973
The Certina Biostar series
The Certina Biostar was produced from 1965 until 1974 and came in the following models and references:
7301 050 | manual winding | round case | cal. 28-163 | 1965 - 1970
7501 001 | electronic | c-shape case | cal. 28-353 | 1971 - 1974 - stainless steel
7506 001 | electronic | c-shape case | cal. 28-353 | 1971 - 1974 - gold plated
7501 050 | electronic pocket watch | 1971 - 1974
721 3549 25 | electronic desk clock | 1974
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