Up to 40% brighter: 
*When angled away from the user.

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.

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).

Sleep apnea notifications: 
*As of September 9, 2024, the Sleep Apnea Notification Feature is currently under FDA review and expected to be cleared this month, with availability on Apple Watch Series 9 and later and Apple Watch Ultra 2 this month. The feature is intended to detect signs of moderate to severe sleep apnea for people 18 years old or older without a diagnosis of sleep apnea.

Vitals: 
*The Vitals app is for wellness purposes only and not for medical use.

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.

Emergency SOS + Crash Detection:
*Emergency SOS requires a cellular connection or Wi-Fi calling with an internet connection from your Apple Watch or nearby iPhone.

International emergency calling:
*Requires Apple Watch Series 7, SE, Ultra, or later. For a list of supported countries and regions, see apple.com/watchos/feature-availability.

Water and dust resistance:
*Apple Watch SE and Apple Watch Series 10 have a water resistance rating of 50 meters under ISO standard 22810:2010 and may be used for shallow‑water activities like swimming in a pool or ocean. Series 10 can also be used for snorkeling to 6 meters. They should not be used for scuba diving, waterskiing, or other activities involving high-velocity water or submersion below shallow depth. Apple Watch Ultra 2 has a water resistance rating of 100 meters under ISO standard 22810:2010 and may be used for high‑speed water sports and recreational scuba diving (with compatible third-party app from the App Store) to 40 meters. It should not be used for diving below 40 meters. Water resistance is not a permanent condition and can diminish over time. For additional information, see support.apple.com/HT205000. Apple Watch Series 10 and Apple Watch Ultra 2 are also rated IP6X dust resistant.

Precision Dual-Frequency GPS: 
*Based on route map and distance accuracy in challenging urban environments.

Cellular and wireless:
*Wireless service plan required for cellular service. Contact your service provider for more details. Connection may vary based on network availability. Check apple.com/watch/cellular for participating wireless carriers and eligibility. See support.apple.com/HT207578 for additional setup instructions.

Double Tap gesture: 
*Requires Apple Watch Ultra 2 or Series 9 or later.

Precision Finding for iPhone:
*Requires an iPhone and Apple Watch with second-generation Ultra Wideband chip.

Power and battery:
*Battery life varies by use and configuration. See apple.com/watch/battery for more information.

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.

Carbon neutral:
*Learn more at apple.com/2030.

Precision Finding for iPhone:
*Requires an iPhone and Apple Watch with second-generation Ultra Wideband chip.

ECG:
*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.

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).

Temperature Sensing:
*The temperature sensing feature is not intended for medical use.

Cycle Tracking:
*Cycle Tracking app should not be used for birth control or to diagnose a health condition.

Emergency SOS + Crash Detection:
*Emergency SOS requires a cellular connection or Wi-Fi calling with an internet connection from your Apple Watch or nearby iPhone.

International Emergency Calling:
*Requires Apple Watch Series 7, SE, Ultra, or later. For a list of supported countries and regions, see apple.com/watchos/feature-availability.

Water and Dust Resistance:
*Apple Watch SE and Apple Watch Series 9 have a water resistance rating of 50 meters under ISO standard 22810:2010. This means that they may be used for shallow-water activities like swimming in a pool or ocean. Apple Watch SE and Apple Watch Series 9 should not be used for scuba diving, waterskiing, or other activities involving high‑velocity water or submersion below shallow depth. Apple Watch Ultra 2 has a water resistance rating of 100 meters under ISO standard 22810 and may be used for high-speed water sports and recreational scuba diving (with compatible third-party app from the App Store) to 40 meters. Should not be used for diving below 40m. Water resistance is not a permanent condition and can diminish over time. For additional information, see support.apple.com/HT205000. Apple Watch Series 9 and Apple Watch Ultra are also rated IP6X dust resistant.

Cellular and Wireless:
*Wireless service plan required for cellular service. Contact your service provider for more details. Connection may vary based on network availability. Check apple.com/watch/cellular for participating wireless carriers and eligibility. See support.apple.com/HT207578 for additional setup instructions.

Family Setup:
*Not all features will be available if the Apple Watch is set up through Family Setup. Wireless service plan required for cellular service. Contact your service provider for more details. Check apple.com/watch/cellular for participating wireless carriers and eligibility.

Power and Battery:
*Battery life varies by use and configuration. See apple.com/batteries for more information.

Fast Charging:
*Fast charging is compatible with Apple Watch Series 7 or later, including all Ultra models. It is not compatible with any Apple Watch SE model.

Bands:
*Bands are subject to availability.

Compatibility:
*Apple Watch Ultra 2, Apple Watch Series 9, and Apple Watch SE require iPhone Xs or later with iOS 17 or later.

Feature Availability:
*Features subject to change. Some features, applications, and services may not be available in all regions or all languages. See apple.com/watchos/feature-availability for complete list.