Can I Download Ecg App On Apple Watch Se

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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.

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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.

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 So if you see an alert on your iPhone that says "Update Apple Watch" and "Your Apple Watch software is out of date," you should update to the latest version of watchOS so that your data, including Activity data, continues to sync to your iPhone.

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).

The overall shape and width of the watch has not changed significantly since its release, so customizable bands and accessories are typically compatible with any Apple Watch of the same size class. Bands that fit the smaller size class (38 mm (1.5 in), 40 mm (1.6 in), and 41 mm (1.6 in) watches) and larger size class (42 mm (1.7 in), 44 mm (1.7 in), and 45 mm (1.8 in) watches) are generally interchangeable within the class.[50] The casing of the watch includes a mechanism to allow the user to change the straps without special tools.

For input, the Watch features a "digital crown" on one side which can be turned to scroll or zoom content on screen, and pressed to return to the home screen or display recently used apps. Next to the crown (on the same side of the watch) is the Side Button, which can be used to access Control Center and the contactless payment service Apple Pay.[51] The Watch also prominently features a touchscreen; prior to Series 6/SE, the screen included Force Touch technology, which enabled the display to become pressure-sensitive and therefore capable of distinguishing between a tap and a press for displaying contextual menus.[52] Force Touch has since been physically removed in Watch Series 6 and Watch SE,[53] and has been disabled via software on Watch Series 5 and earlier on models supporting watchOS 7.[54]

Additional sensors integrated into the Watch include an accelerometer, gyroscope, and barometer, which are used to determine device orientation, user movement, and altitude.[55] The back of all Apple Watches are equipped with a Heart Rate Monitor, which projects infrared and green light from light-emitting diodes (LEDs) onto the user's skin and photodiodes measure the varying amount of light reflected. Because blood absorbs green light and reflects red light, the amounts of each type of reflected light are compared to determine heart rate. The Watch adjusts the sampling rate and LED brightness as needed.[55] Starting with the Series 4, Apple added electrical sensors to the Digital Crown and back, allowing the Watch to take electrocardiogram (ECG) readings;[56] the device won FDA clearance in October 2018, becoming the first consumer device capable of taking an ECG.[57] A blood oxygen monitor was added with the Series 6 in 2020, albeit as a "wellness" device not capable of diagnosing a medical condition.[58] The blood oxygen monitor added red LEDs to the back, allowing the watch to determine oxygen levels by measuring blood color.[59] The Watch SE reverted to the capabilities of the Series 3, dropping the electrical sensors and blood oxygen monitor.[60]

Apple rates the device's battery for 18 hours of mixed usage.[52][61] Apple Watch is charged by means of inductive charging.[5] If the watch's battery depletes to less than 10 percent, the user is alerted and offered to enable Low Power Mode, which allows the user to continually use the watch while some features are disabled. The watch then reverts to its original mode when the battery is sufficiently charged.[62] e24fc04721