- Always-on Retina Display has Nearly 20% More Screen Area than Series 6, Making Everything Easier to See and Use
- The Most Crack-Resistant Front Crystal yet on an Apple Watch, IP6X Dust Resistance, and Swimproof Design³
- Measure your Blood Oxygen with a Powerful Sensor and App¹
- Take an ECG Anytime, Anywhere²
- Get High and Low Heart Rate, and Irregular Heart Rhythm Notifications⁴
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