Apple says that the blood oxygen measurement is only for wellness and fitness purposes and not intended to replace a medical device, such as a pulse oximeter, which requires federal approval. For more precise metrics as you move, the new always-on altimeter continuously tracks your elevation changes in real time, indoors and out. The ECG function is useful for those worried about their heart but outside of testing, I’m highly unlikely to use it regularly. I also had Do Not Disturb on most of the time, so I wasn't getting notifications, which could have extended battery life. View image in fullscreen The new typograph face is attractive but I can’t reliably tell the time with it.

It has a heart rate sensor that continuously monitors the user's heart rate every few minutes, depending on activity.Additionally, Apple Watch Series 6 features the U1 chip and Ultra Wideband antennas, 3 which will enable short-range wireless location to support new experiences, such as next-generation digital car keys. For the non-hardcore, it's potentially useful (especially in Covid times, where respiratory issues are on the rise) as a way to check your health occasionally if you feel a little weak or light headed. Notifications in the Heart Rate app will alert you to these irregularities so you can take action and consult your doctor. This feature has been around, but it triggered much quicker on this new model, as did the auto-unlock feature for Mac.

After Apple's failed bid to keep selling Apple Watch models with blood oxygen detection during an appeal process, the company will simply sell the affected models with the feature removed. Knowing whether your body is getting enough oxygen or not (combined with the ECG being able to tell you whether your heartbeat is regular or not) could help to identify problems much earlier than you otherwise might. The Series 6 uses similar technology as a pulse oximeter—the device they clip onto your finger at the doctor's office—to measure your blood oxygen saturation.The 14 days allows you to transfer your data and ensures you're never without a phone, tablet, or watch! Apple Watch Series 6 expands the health capabilities of previous Apple Watch models with a new feature that conveniently measures the oxygen saturation of the user’s blood, so they can better understand their overall fitness and wellness.