Buyers won’t need to wait to use Apple Watch Series 6’s marquee feature: a blood oxygen sensor. The Blood Oxygen app should be available from day one in the United States and many other countries, according to Apple’s list of watchOS 7 features.
That stands in stark contrast to the delay for Apple Watch Series 4’s big health-related feature. People who bought it had to wait quite a few months before the smartwatch’s new ECG feature went live. It switched on in the United States three months after the device shipped, and users elsewhere had to wait even longer.