Apple Watch Series 8 - Technical Specifications - Apple Support
https://support.apple.com/en-us/111848
WEBMar 31, 2023 · Features. L1 GPS, GLONASS, Galileo, QZSS, and BeiDou. Compass. Always-on altimeter. Water resistant. 50 meters3. Certified IP6X dust resistant 2. Blood oxygen sensor. (Blood Oxygen app)4. Electrical heart sensor. (ECG app)5. Third-generation optical heart sensor. International emergency calling 6. Emergency SOS 1. International …
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