Battery:
*Battery life varies by use and configuration. See apple.com/batteries for more information.
Temperature sensing:
*The temperature sensing feature is not intended for medical use. Temperature sensing is available only on Apple Watch Series 8 and later and all Apple Watch Ultra models.
Cycle tracking:
*Cycle tracking app should not be used for birth control or to diagnose a health condition.
Blood Oxygen app:
*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.
ECG app:
*The ECG app is available on Apple Watch Series 4 and later (excluding Apple Watch SE) and can generate an ECG similar to a single-lead electrocardiogram. Intended for use by people 22 years old and over.
Emergency SOS:
*Emergency SOS requires a cellular connection or Wi-Fi Calling with an internet connection from your Apple Watch or nearby iPhone.
IRN (Irregular Rhythm Notification):
*Irregular rhythm notification requires the latest version of watchOS and iOS. It is not intended for use by people under 22 years old or those who have been previously diagnosed with atrial fibrillation (AFib).
Up to 20% faster:
*Results based on the performance of common user tasks. Testing conducted by Apple in August 2022 using preproduction Apple Watch SE (2nd generation) and shipping Apple Watch SE (1st generation), each paired with an iPhone; all devices tested with prerelease software. Results reflect the approximate performance of Apple Watch.
Gestures:
*Requires Apple Watch Ultra 2 or Series 9 or later.
Fast charging:
*Charge times are from 0‑80% and 0‑100% using the included Apple Watch Magnetic Fast Charger to USB‑C Cable. Testing conducted by Apple in August 2024 using preproduction Apple Watch Series 10 (GPS) and Apple Watch Series 10 (GPS + Cellular), each paired with an iPhone; all devices tested with prerelease software, Apple Watch Magnetic Fast Charger to USB‑C Cable (Model A2515), and Apple 20W USB‑C Power Adapter (Model A2305). Fast‑charge testing conducted with drained Apple Watch units. Times measured from the appearance of the Apple logo as the unit started up. Charge time varies with region, settings, and environmental factors; actual results will vary.
Power and battery:
*Battery life varies by use and configuration. See apple.com/watch/battery for more information.










