The first time you open the Blood Oxygen app on the watch, it takes you through some helpful tips to get a good reading. Apple says your watch band should be snug but comfortable, and to make sure the watch isn't too low on your wrist. You should keep the watch facing up and try not to move during the reading. Resting your arm on a table can help.

The Series 6 is water-resistant to 165 feet. Apple says it's safe for shallow water activities like swimming (in a pool or in the ocean). You can also wear it in the shower and hot tub. You shouldn't, however, wear it while scuba diving, waterskiing, or "other activities involving high-velocity water or submersion below shallow depth," Apple says. Setup and Interface When you start a blood oxygen scan, you'll see a 15-second countdown timer on the screen along with a relaxing blue and red graphic. After 15 seconds, your blood oxygen saturation percentage will appear onscreen. You can also view blood oxygen measurements in the Health app on your iPhone. The Series 6 also features a new antenna with double the spectrum of the Series 5 that enables it to support 5GHz Wi-Fi for the first time. This can help free up congested 2.4GHz bands, while allowing access to potentially speedier 5GHz bands.

Consumer finance on the Apple Online Store is brokered by Apple Retail UK Limited, which acts as a credit broker and not the lender. Apple offers finance from a restricted range of finance providers and Barclays Partner Finance, which is a trading name of Clydesdale Financial Services Limited, a member of the Barclays Group. Clydesdale Financial Services Limited is authorised and regulated by the Financial Conduct Authority (Financial Services Register number: 311753). Registered in England. Registered no.: 2901725. Registered office: 1 Churchill Place, London E14 5HP. Subject to application and status. Full terms apply. Apple Watch SE has a water resistance rating of 50 meters under ISO standard 22810:2010. This means that it may be used for shallow-water activities like swimming in a pool or ocean. Apple Watch SE should not be used for scuba diving, waterskiing, or other activities involving high-velocity water or submersion below shallow depth. Water resistance is not a permanent condition and can diminish over time. For additional information see support.apple.com/en-us/HT205000.

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). I really like this feature, and when I'm testing other wearables, I miss it every time I wash my hands. I find that the countdown timer is sometimes accidentally triggered when I'm washing fruit and vegetables in the sink, but I just take it as a sign to wash again. Perhaps the watch's biggest strength remains the App Store, which lets you browse and install apps right on the watch itself. With more than 20,000 Apple Watch apps available, it easily has the largest, highest-quality third-party selection of any wearable.Apple Watch All-Day Battery Life testing was conducted by Apple in August 2020 using preproduction Apple Watch Series 6 (GPS) and Apple Watch Series 6 (GPS + Cellular), each paired with an iPhone; all devices were tested with prerelease software. Battery life varies by use, cellular coverage, configuration, and many other factors; actual results will vary. See apple.com/batteries and apple.com/watch/battery.html for more information. You don't need the Series 6 to take advantage of these features. WatchOS 7 is also available on Apple's Series 3, 4, and 5 watches, as well as the new Watch SE. Case and band combinations can be made within collections (Apple Watch and Apple Watch Hermès) only. The Series 6 uses similar technology as a pulse oximeter—the device they clip onto your finger at the doctor's office—to measure your blood oxygen saturation. Its SpO2 sensor shines red and infrared light through your skin, onto the blood vessels of your wrist, and measures the color of your blood, which indicates the amount of oxygen present. Bright red blood is more saturated, and dark red blood is less so. Changes in your body or elevation can impact your blood oxygen level.

If you reside in the U.S. territories, please call Goldman Sachs at 877-255-5923 with questions about Apple Card. Later this year, Apple also plans to add a Low Cardio Fitness feature, which can notify you if your VO2 Max (a metric used to measure cardiovascular fitness indicating the maximum amount of oxygen your body can use during intense exercise) falls into a low range. Apps 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. Features are subject to change. Some features, applications, and services may not be available in all regions or all languages. View complete list.Carbon reductions are calculated against a baseline scenario: 1) No use of clean electricity for manufacturing or product use, beyond what is already available on the grid (based on regional emissions factors). 2) Apple’s carbon intensity of key materials as of 2015 (our baseline year for our 2030 product carbon neutrality goal). Carbon intensity of materials reflects use of recycled content and production technology. 3) Apple’s average mix of transportation modes (air, rail, ocean, ground) by product line across three years (fiscal years 2017 to 2019) to best capture the baseline transportation emissions of our products. The watch uses data from the barometric pressure sensor, GPS, and nearby Wi-Fi networks to determine your exact location and update your elevation on the fly. You can also add your elevation as a complication on the watch face. Also, keep in mind that the length of most bands available usually matches the watch size. This means that usually small bands are not quite that available for the 44mm and large bands for the 40mm, and although it's not impossible to find one, it may be more difficult to do so. The Samsung Galaxy Watch3 offered similar battery life in testing, but the Fitbit Sense lasted around three days. The standout feature here is a new sensor that can measure the oxygen saturation of your blood, also known as SpO2. This metric indicates how well your circulatory and respiratory systems are delivering oxygenated blood to your body. Your SpO2 reading alone can't diagnose COVID-19, but as the Yale School of Medicine advises, a reading below 90 percent may warrant a trip to the emergency room.