TapCycle Tracking. Swipe to the correct day, then tap the oval to log your period. To add more information, scroll down and tap a category, make a change, then tap Done. You can track symptoms, spotting, basal body temperature, and more. To track your cycle from your Apple Watch, open the Cycle Tracking app, swipe to the correct date, Holdthe watch near your iPhone. Hold the Apple Watch close to your iPhone. Wait until "Use your iPhone to set up this Apple Watch" appears on your iPhone, then tap Continue. If you don't see this message, open the Apple Watch app on your iPhone, tap All Watches, then tap Add Watch. Tap Set Up for a Family Member, then Withfeatures that help you stay healthy, safe, and connected, the watch that pushes limits is also one you can wear every day. Apple Watch Ultra 2, Apple Watch Series 9, and Apple Watch SE require iPhone Xs or later with iOS 17 or later. Features are subject to change. Some features, applications, and services may not be available in all TheApple Watch has two ways of measuring your heart rate: Apple Watch Series 1 or later: Uses an optical heart rate sensor. Apple Watch Series 4 or later (excluding the first SE model released in 2020): Uses an electrical heart sensor used by the ECG app. In every Watch that has it, the optical heart rate sensor can detect if you have advancedhealth features. Buy. Learn more. 45mm or 41mm aluminum or stainless steel case size. Carbon-neutral combinations available 14. Always-On Retina display Apple Watch Ultra 2, Apple Watch Series 9, and Apple Watch SE require iPhone Xs or later with iOS 17 or later. Features are subject to change. Some features, applications, and Themajor features missing from the Apple Watch SE 2 are still advanced health sensors. Like the original SE, the 2022 model skips out on blood oxygen AppleWatch SE gets you more features for less. Trade in your eligible Apple Watch and explore financing options. Health Features. Get high and low heart rate and irregular rhythm notifications. Apple Watch Ultra 2, Apple Watch Series 9 and Apple Watch SE require iPhone Xs or later with iOS 17 or later. Healthand fitness features. Wareable. Where the Apple Watch SE differs from the Series 6 (and Series 5) is in what you don’t get. There’s no ECG or SpO2 sensor, so if you’re looking to max CERj.