I was impressed by the medical features of the Apple Watch until my father showed me his 90s Casio BP-120 that even measures ist blood pressure : r/AppleWatch
Vintage Casio BP-120 Blood Pressure Monitor Watch
Vintage Casio BP-100 Digital Watch, Men's Fashion, Watches & Accessories, Watches on Carousell
Casio BP-120 blood pressure and pulse watch : r/casiovintage