The Apple Watch Series 6 smartwatch is the latest and currently rated as the best smartwatch in the market. Although it has the same physical appearance and design as the previous series 5 model, the Apple Watch series 6 does however have a few internal upgrades that’s worth mentioning.
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The big new feature that you can find in the Apple Watch Series 6 is the inclusion of a Blood Oxygen Sensor and the corresponding Blood Oxygen app. Oxygen saturation (SpO2) represents the percentage of oxygen being carried by red blood cells from the lungs to the rest of the body. Blood Oxygen measurement is made possible by a new Apple Watch Series 6-exclusive sensor.