How Does SpO2 Oxygen Sensor Work in Smartwatch? Is it Accurate?
Initially, the majority of smartwatches had only heart rate sensors. But now, brands have started giving the SpO2 or Blood oxygen monitor even on budget smartwatches. But have you ever wondered how the SpO2 or… Read More »How Does SpO2 Oxygen Sensor Work in Smartwatch? Is it Accurate?
