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Footnote

* Blood Oxygen app measurements are not intended for medical use, including self-diagnosis or consultation with a doctor, and are only designed for general fitness and wellness purposes.

** The ECG app is available on Apple Watch Series 4 and later (not including Apple Watch SE) with the latest versions of iOS and watchOS. See apple.com/watch for compatibility details. ECG is not intended for use by people under 22 years old. With the ECG app, Apple Watch is capable of generating an ECG similar to a single-lead electrocardiogram.

*** Product carbon footprint (CO2e) is a measure of the total greenhouse gas emissions that are generated by a product, from the extraction of raw materials all the way through to disposal and recycling. Visit business.bt.com/about-us/sustainability to learn more about BT groups sustainability commitments.

  1. Emergency SOS and Find My via satellite are included free for two years with the activation of Apple Watch Ultra 3. Connection and response times vary based on location, site conditions and other factors. Find My via satellite requires a mobile plan. Satellite connectivity provided by Globalstar and its affiliates. See Official Apple Support for more information.
  2. Battery life varies by use and configuration. See Apple Watch battery for more information.
  3. When angled away from the user as compared with Apple Watch Ultra or Ultra 2.
  4. Hypertension notifications are not intended for use by people under 22 years old, those who have been previously diagnosed with hypertension, or pregnant persons.
  5. Fast charging is compatible with Apple Watch Series 7 and later, any Apple Watch Ultra model and Apple Watch SE 3.
  6. Battery life varies by use and configuration. See apple.com/uk/watch/battery for more information. 
  7. Workout tested without iPhone and with heart rate sensor on during outdoor run workout sessions. Extended Workout turns on Low Power Mode during the workout; running form metrics will be unavailable. Max Extended Workout turns on Low Power Mode during the workout, and turns off alerts and splits; certain metrics will be unavailable. Testing conducted by Apple in July and August 2026 using pre production Apple Watch Ultra 4; all devices tested with pre release software. Battery life varies by use, configuration, mobile network, signal strength and many other factors; actual results will vary.
  8. Apple Intelligence is available with Siri and device language set to Chinese (Simplified), Chinese (Traditional), Danish, Dutch, English, French, German, Italian, Japanese, Korean, Norwegian, Portuguese, Spanish, Swedish, Turkish or Vietnamese. Some features may not be available in all regions or languages. Some devices may not be available in all regions. Siri AI is available in beta in watchOS 27 and requires an Apple Intelligence–enabled device set to a supported language. Available in English to start. Siri AI will not be initially available in the EU on watchOS. Certain Apple Intelligence features that rely on server-side models are subject to daily usage limits, including but not limited to Siri AI. Daily limits may vary by feature, request complexity, system demand, system policies and other factors. Expanded access to such features will be available for a fee in the future. Use of these features is subject to the Apple Intelligence Terms and Conditions. Learn more at apple.com/uk/apple-intelligence.
  9. Audio Intelligence includes Live Rewind, Siri Recap, Sound Recognition and faster Shazam and requires Apple Watch Series 12 or Apple Watch Ultra 4. Live Rewind and Siri Recap will be available in beta in late 2026 and require an Apple Intelligence–enabled iPhone 16 or later (excluding iPhone 16e). Will be available in English to start and will not initially be available in the EU. Certain Audio Intelligence features that rely on server side models are subject to daily usage limits, including but not limited to Live Rewind and Siri Recap. For more information, visit support.apple.com/en-gb/148354. 
  10. Based on Apple-conducted study of heart rate accuracy, August 2026. Visit apple.com/uk/HRAccuracy.
  11. Hypertension notifications are not intended for use by people under 22 years old, those who have been previously diagnosed with hypertension, or pregnant persons. 
  12. The Cycle Tracking app should not be used for birth control or to diagnose a health condition. Cycle deviation notifications inclusive of perimenopause are for people 40 years old or older. 
  13. The Vitals app is for wellness purposes only and not for medical use.
  14. Testing conducted by Apple in July and August 2026 using pre production Apple Watch Series 12 (GPS) and Apple Watch Series 12 (GPS + Cellular), each paired with an iPhone; all devices tested with pre release software, pre production Apple Watch Magnetic Fast Charger to USB C Cable (Model A3277), and Apple 20W USB C Power Adapter (Model A2305). Charge time varies with adapter, region, settings, initial battery levels, usage and environmental factors; actual results will vary. 

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