Taking my heart rate / blood pressure with the 1990 Casio BP-100 watch ❤️🩺 #retro #watch
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@retro_restorations
The stunning and fantastic Casio BP-100 from 1990!
❤️🩺 Using the combination of a photo sensor and conductivity between the front and back of the case - it generated a heartbeat reading which was then ‘converted’ in to blood pressure.
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