Apple Watch is no longer a rich boy’s toy or an accessory for Kool Aid-drinking hipsters — it’s a device you’ll want to give to people you love because you want to protect them. This new status means it has reached a significant inflection point, becoming an essential tool for better healthcare.

What has Apple done here?

Among a raft of improvements to the product (many of which had been predicted), Apple introduced critical heart- and health-related features for Apple Watch Series 4:

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