Apple Watch Compare

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Hypertension notifications are not intended for use by people under 22 years old, those who have been previously diagnosed with hypertension or pregnant persons.

The ECG app is available on Apple Watch Series 4 and later (excluding Apple Watch SE models) and can generate an ECG similar to a single-lead electrocardiogram. Intended for use by people 22 or older.

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).

The Blood Oxygen app is for wellness purposes only and not for medical use. Measurements are calculated and viewed on iPhone in the Health app.

Sleep apnea notifications are available on Apple Watch Series 9 and later, Ultra 2 and later, and SE 3. The feature is intended to detect signs of moderate to severe sleep apnea for people 18 or older without a diagnosis of sleep apnea.

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

The temperature sensing feature is not intended for medical use. Temperature sensing is available only on Apple Watch Series 8 and later, Apple Watch SE 3 and all Apple Watch Ultra models.

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

Emergency SOS requires a cellular connection or Wi‑Fi calling with an internet connection from your Apple Watch or nearby iPhone. You can use cellular models of Apple Watch to make an emergency call in many locations, provided that cellular service is available. Some cellular networks may not accept an emergency call from your Apple Watch if your Apple Watch isn’t activated, if it isn’t compatible with or configured to operate on a particular cellular network, if it isn’t set up for cellular service or if the cellular network does not support emergency calling over IMS. See support.apple.com/en-ca/108374 and apple.com/ca/watch/cellular for more information.

Emergency SOS requires a satellite connection, cellular connection or Wi‑Fi calling with an internet connection from your Apple Watch or nearby iPhone. You can use cellular models of Apple Watch to make an emergency call in many locations, provided that cellular service is available. Some cellular networks may not accept an emergency call from your Apple Watch if your Apple Watch isn’t activated, if it isn’t compatible with or configured to operate on a particular cellular network, if it isn’t set up for cellular service or if the cellular network does not support emergency calling over IMS. See support.apple.com/en-ca/108374 and apple.com/ca/watch/cellular for more information.

International emergency calling requires an Apple Watch Series 5 (GPS + Cellular), Apple Watch SE (GPS + Cellular), Apple Watch Ultra or later. For a list of supported countries and regions, see apple.com/ca/watchos/feature-availability.

Apple Watch Series 2, Series 3, Series 4, Series 5, Series 6, Series 7, Series 8, Series 9, Series 10 and Series 11, and Apple Watch SE, SE 2 and SE 3 have a water-resistance rating of 50 metres under ISO standard 22810:2010. This means that they may be used for shallow-water activities like swimming in a pool or ocean. Series 10 and later can also be used for snorkelling to 6 metres. However, they should not be used for scuba diving, waterskiing or other activities involving high-velocity water. Apple Watch Ultra, Ultra 2 and Ultra 3 have a water-resistance rating of 100 metres under ISO standard 22810:2010. They may be used for recreational scuba diving (with compatible third-party app from the App Store) to 40 metres and high-speed water sports. They should not be used for diving below 40 metres. Water resistance is not a permanent condition and can diminish over time. For additional information, see support.apple.com/en-ca/109522.

Apple Watch Series 1 has a water-resistance rating of IPX7 under IEC standard 60529. Apple Watch Series 1 is splash- and water-resistant, but submerging it is not recommended.

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

Emergency SOS, Find My and Messages via satellite are included for 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 and Messages via satellite require a carrier plan. To send and receive SMS from cellular models of Apple Watch over satellite, your paired iPhone must be powered on and connected to Wi‑Fi or an active cellular network, but your iPhone doesn’t need to be nearby. SMS message rates may apply. Satellite connectivity provided by Globalstar and its affiliates. See support.apple.com/en-ca/123924 for more information.

Requires an iPhone and Apple Watch with second-generation Ultra Wideband chip. Ultra Wideband availability varies by region.

All-day battery life including sleep tracking is based on the following use: 300 time checks, 90 notifications, 15 minutes of app use, a 60‑minute workout with music playback from Apple Watch via Bluetooth, and 6 hours of sleep tracking over the course of 24 hours; Apple Watch Series 11 (GPS) usage includes connection to iPhone via Bluetooth during the entire 24‑hour test; Apple Watch Series 11 (GPS + Cellular) usage includes a total of 4 hours of cellular connection and 20 hours of connection to iPhone via Bluetooth over the course of 24 hours. Battery life in Low Power Mode including sleep tracking is based on the following use: 530 time checks, 160 notifications, 26 minutes of app use, a 60‑minute workout with music playback from Apple Watch via Bluetooth, and 6 hours of sleep tracking over the course of 38 hours; Apple Watch Series 11 (GPS) usage includes connection to iPhone via Bluetooth during the entire 38‑hour test; Apple Watch Series 11 (GPS + Cellular) usage includes on-demand cellular connection and 30 hours of connection to iPhone via Bluetooth over the course of 38 hours. Testing conducted by Apple in July and August 2025 using preproduction Apple Watch Series 11 (GPS) and Apple Watch Series 11 (GPS + Cellular), each paired with an iPhone; all devices tested with prerelease software. Battery life varies by use, configuration, cellular network, signal strength and many other factors; actual results will vary.

All-day battery life is based on the following use: 300 time checks, 90 notifications, 15 minutes of app use, and a 60‑minute workout with music playback from Apple Watch via Bluetooth, over the course of 18 hours; Apple Watch SE 3 (GPS) usage includes connection to iPhone via Bluetooth during the entire 18‑hour test; Apple Watch SE 3 (GPS + Cellular) usage includes a total of 4 hours of cellular connection and 14 hours of connection to iPhone via Bluetooth over the course of 18 hours. Battery life in Low Power Mode including sleep tracking is based on the following use: 430 time checks, 130 notifications, 20 minutes of app use, a 60‑minute workout with music playback from Apple Watch via Bluetooth, and 6 hours of sleep tracking over the course of 32 hours; Apple Watch SE 3 (GPS) usage includes connection to iPhone via Bluetooth during the entire 32‑hour test; Apple Watch SE 3 (GPS + Cellular) usage includes on-demand cellular connection and 24 hours of connection to iPhone via Bluetooth over the course of 32 hours. Testing conducted by Apple in July and August 2025 using preproduction Apple Watch SE 3 (GPS) and Apple Watch SE 3 (GPS + Cellular), each paired with an iPhone; all devices tested with prerelease software. Battery life varies by use, configuration, cellular network, signal strength and many other factors; actual results will vary.

Multi-day battery life including sleep tracking is based on the following use: 600 time checks, 180 notifications, 30 minutes of app use, a 60‑minute workout with music playback from Apple Watch via Bluetooth, and 6 hours of sleep tracking over the course of 42 hours; Apple Watch Ultra 3 usage includes a total of 8 hours of cellular connection and 34 hours of connection to iPhone via Bluetooth over the course of 42 hours. Battery life in Low Power Mode including sleep tracking is based on the following use: 900 time checks, 270 notifications, 45 minutes of app use, two 60‑minute workouts with music playback from Apple Watch via Bluetooth, and 18 hours of sleep tracking over the course of 72 hours; Apple Watch Ultra 3 usage includes on-demand cellular connection and 60 hours of connection to iPhone via Bluetooth over the course of 72 hours. Testing conducted by Apple in July and August 2025 using preproduction Apple Watch Ultra 3 paired with an iPhone; all devices tested with prerelease software. Battery life varies by use, configuration, cellular network, signal strength and many other factors; actual results will vary.

All-day battery life is based on the following use: 90 time checks, 90 notifications, 45 minutes of app use, and a 60‑minute workout with music playback from Apple Watch via Bluetooth, over the course of 18 hours; Apple Watch SE 2 (GPS) usage includes connection to iPhone via Bluetooth during the entire 18‑hour test; Apple Watch SE 2 (GPS + Cellular) usage includes a total of 4 hours of LTE connection and 14 hours of connection to iPhone via Bluetooth over the course of 18 hours. Testing conducted by Apple in August 2022 using preproduction Apple Watch SE 2 (GPS) and Apple Watch SE 2 (GPS + Cellular), each paired with an iPhone; all devices tested with prerelease software. Battery life varies by use, configuration, cellular network, signal strength and many other factors; actual results will vary.

All-day battery life is based on the following use: 300 time checks, 90 notifications, 15 minutes of app use and a 60‑minute workout with music playback from Apple Watch via Bluetooth, over the course of 18 hours; Apple Watch Series 10 (GPS) usage includes connection to iPhone via Bluetooth during the entire 18‑hour test; Apple Watch Series 10 (GPS + Cellular) usage includes a total of 4 hours of LTE connection and 14 hours of connection to iPhone via Bluetooth over the course of 18 hours. Battery life in Low Power Mode is based on the following use: 600 time checks, 180 notifications, 30 minutes of app use and a 60‑minute workout with music playback from Apple Watch via Bluetooth, over the course of 36 hours; Apple Watch Series 10 (GPS) usage includes connection to iPhone via Bluetooth during the entire 36‑hour test; Apple Watch Series 10 (GPS + Cellular) usage includes on-demand LTE connection and 28 hours of connection to iPhone via Bluetooth over the course of 36 hours. 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. Battery life varies by use, configuration, cellular network, signal strength and many other factors; actual results will vary.

Multi-day battery life is based on the following use: 600 time checks, 180 notifications, 30 minutes of app use and a 60‑minute workout with music playback from Apple Watch via Bluetooth, over the course of 36 hours; Apple Watch Ultra 2 (GPS + Cellular) usage includes a total of 8 hours of LTE connection and 28 hours of connection to iPhone via Bluetooth over the course of 36 hours. Battery life in Low Power Mode is based on the following use: 1200 time checks, 360 notifications, 60 minutes of app use and two 60‑minute workouts with music playback from Apple Watch via Bluetooth, over the course of 72 hours; Apple Watch Ultra 2 (GPS + Cellular) usage includes on-demand LTE connection and 60 hours of connection to iPhone via Bluetooth over the course of 72 hours. Testing conducted by Apple in August 2024 using preproduction Apple Watch Ultra 2 (GPS + Cellular) paired with an iPhone; all devices tested with prerelease software. Battery life varies by use, configuration, cellular network, signal strength and many other factors; actual results will vary.