4: Series

Do you need a for an existing Series 4?

The Digital Crown added mechanical-feeling clicks for precise scrolling. Series 4

Internals were overhauled to match the ambitious new software. Do you need a for an existing Series 4

Automatically calls emergency services if you are unresponsive after a fall. Series 4

This model turned the Apple Watch into a certified medical tool.

The first over-the-counter wearable to offer a 30-second electrocardiogram.

Uses an improved accelerometer and gyroscope to detect hard falls.