You can check your heart rate any time using the Heart Rate app. Open the app, then wait for Apple Watch to measure your heart rate. You can also view your resting, walking, breathe, workout, and recovery rates throughout the day. To easily open the app, add the Heart Rate complication to your watch face.


You can also turn on heart rate notifications, so you know if your heart rate remains above or below a chosen beats per minute (BPM), or to occasionally check for an irregular heart rhythm.

Irregular rhythm notifications are available only with watchOS 5.1.2 or later. To enable irregular rhythm notifications, the notifications must be available in your country or region. Learn where irregular rhythm notifications are available.


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Some iOS updates on your iPhone require that you also update watchOS on your Apple Watch. So if you see an alert on your iPhone that says "Update Apple Watch" and "Your Apple Watch software is out of date," you should update to the latest version of watchOS so that your data, including Activity data, continues to sync to your iPhone.

**RedCard price reflects 5% discount with credit or debit RedCard 1.Learn more at apple.com/2030. 2.Coming later this year. 3.The temperature sensing feature is not intended for medical use. 4.Blood Oxygen app is for wellness purposes only and not for medical use. 5.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. 6.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). 7.Emergency SOS requires a cellular connection or Wi-Fi calling with an internet connection from your Apple Watch or nearby iPhone. 8.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. 9.All-day battery life is based on the following use: 180 time checks, 180 notifications, 90 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: 360 time checks, 360 notifications, 180 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 2023 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. 10.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 Series 9 (GPS) usage includes connection to iPhone via Bluetooth during the entire 18-hour test; Apple Watch Series 9 (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: 180 time checks, 180 notifications, 90 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 9 (GPS) usage includes connection to iPhone via Bluetooth during the entire 36-hour test; Apple Watch Series 9 (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 2023 using preproduction Apple Watch Series 9 (GPS) and Apple Watch Series 9 (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.

Each Series has been initially sold in multiple variants defined by the watch casing's material, color, and size (except for the budget watches Series 1 and SE, available only in aluminum,[10][13] and the Ultra, available only in 49 mm titanium[12]), and beginning with Series 3, by the option in the aluminum variants for LTE cellular connectivity, which comes standard with the other materials.[14] The band included with the watch can be selected from multiple options from Apple, and watch variants in aluminum co-branded with Nike and in stainless steel co-branded with Herms are also offered, which include exclusive bands, colors, and digital watch faces carrying those companies' branding.[14]

The Apple Watch operates in conjunction with the user's iPhone for functions such as configuring the watch and syncing data with iPhone apps, but can separately connect to a Wi-Fi network for data-reliant purposes, including communications, app use, and audio streaming.[15][16] LTE-equipped models can also perform these functions over a mobile network, and can make and receive phone calls independently when the paired iPhone is not nearby or is powered-off, substantially reducing the need for an iPhone after initial setup.[b] The oldest iPhone model that is compatible with any given Apple Watch depends on the version of the operating system installed on each device.[19] As of September 2022[update], new Apple Watches come with watchOS 9 preinstalled and require an iPhone running iOS 16, which is available for the iPhone 8 and later.[20]

Apple design chief Jony Ive became interested in building a watch shortly after Steve Jobs's death in October 2011.[21] That December, The New York Times reported that Apple was exploring various ideas, including a "curved-glass iPod that would wrap around the wrist", which users would interact with through the Siri voice assistant, and which "could relay information back to the iPhone".[22] In February 2013, the NYT and The Wall Street Journal again confirmed that Apple was working on a smartwatch with a curved display,[23] and Bloomberg News said the team had grown to about 100 designers.[24]

In March 2013, Apple hired ex-Adobe chief technology officer Kevin Lynch, reporting to Bob Mansfeld,[25] to lead the watch project, which would become the company's first major new product without input from late co-founder Steve Jobs.[21] Apple started the project without specific use cases in mind, not knowing what problems the watch would solve, but felt that "technology was going to move onto the body", according to Alan Dye, who was in charge of its user interface. According to Kevin Lynch, the team felt people spent too much time on their phone, nagged by notifications, and a watch would provide "that level of engagement [...] in a way that's a little more human, a little more at the moment when you're with somebody".[21]

The software evolved more quickly than the hardware. To test it, the team created its first prototype, an iPhone strapped to the wrist with velcro, which showed the watch software in its true size and an onscreen watch crown for input. The crown was later turned into a physical dongle plugged into the headphone jack. Early on, the user interface and bundled apps were inspired by the iPhone, but they were too complex and underwent three rounds of redesigns, to avoid awkwardly long interactions that would annoy users. The team worked on notification vibrations and sounds for more than a year, attempting to make them reflect the nature of different notifications. They also added a way to show a contextual menu by pressing the display more deeply, called Force Touch. In contrast with Apple's usually narrow design options, the team thought a watch would need to appeal to users' diverse tastes in fashion, so they opted to give a choice of bands, models (like the gold-plated Apple Watch Edition) and watch faces.[21]

During a September 2014 press event where the iPhone 6 was also presented, the new watch product was introduced by Tim Cook's "one more thing" section. After a video focusing on the design process, Cook reappeared on stage wearing an Apple Watch.[29]

In comparison to other Apple products and competing smartwatches, marketing of the Apple Watch promoted the device as a fashion accessory.[30] Apple later focused on its health and fitness-oriented features, in an effort to compete with dedicated activity trackers. The watchOS 3 added fitness tracking for wheelchair users, social sharing in the Activity app, and a Breathe app to facilitate mindfulness.[31]

Each series of Apple Watch is offered in multiple variants, distinguished by the casing's material, color, and size,[45] with special bands and digital watch faces available for certain variants co-branded with Nike and Herms, which are also sometimes accompanied by other unique extras, like stainless steel charging pucks, premium packaging, and exclusive color basic bands.[46]

Starting with Series 1/Series 2, Apple dropped the "Sport" moniker from the branding (apart from the sport bands), and the Apple Watch was available with either an aluminum (lowest cost) or stainless steel case. "Apple Watch Edition" branding still exists, but now refers to watch casings made from ceramic or titanium.[47]

Since the introduction of the Apple Watch, it has been available in two sizes, primarily affecting screen resolution and area. The smaller size at launch was 38 mm (1.5 in), referring to the approximate height of the watch case; the larger size was 42 mm (1.7 in). Starting with Series 4, the two nominal sizes changed to 40 mm (1.6 in) and 44 mm (1.7 in).[49] The nominal sizes changed again with the introduction of Series 7: 41 mm (1.6 in) and 45 mm (1.8 in). 006ab0faaa

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