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Nike Run Club app 
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Nike Sport Band and Nike Sport Loop in new colors 
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New, more customizable Nike watch faces 
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GPS model lets you take calls and reply to texts from your wrist 
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Measure your blood oxygen with an all-new sensor and app²
 ²Blood 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.
 
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Check your heart rhythm with the ECG app³
 ³The ECG app and irregular rhythm notification require the latest versions of watchOS and iOS and are not intended for use by people under 22 years old.
 
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The ECG app is available on Apple Watch Series 4 or later. The irregular rhythm notification is not designed for people who have been previously diagnosed with atrial fibrillation (AFib). 
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The Always-On Retina display is 2.5x brighter outdoors when your wrist is down 
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S6 SiP is up to 20% faster than Series 5 
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5GHz Wi-Fi and U1 Ultra Wideband chip 
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Track your daily activity on Apple Watch and see your trends in the Fitness app on iPhone 
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Measure workouts like running, walking, cycling, yoga, swimming, and dance 
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Swimproof design⁴
 ⁴ISO standard 22810:2010. Appropriate for shallow-water activities like swimming. Submersion below shallow depth and high-velocity water activities not recommended.
 
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Sync your favorite music, podcasts, and audiobooks 
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Pay instantly and securely from your wrist with Apple Pay 
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High and low heart rate notifications and irregular heart rhythm notification³ 
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Built-in compass and real-time elevation readings 
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Can detect if you’ve taken a hard fall, then automatically call emergency services for you 
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Emergency SOS lets you get help from your wrist⁵
 ⁵To use Emergency SOS, your iPhone needs to be nearby. If your iPhone isn’t nearby, your Apple Watch needs to be connected to a known Wi-Fi network and you must set up Wi-Fi Calling.
 
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watchOS 7 with sleep tracking, cycling directions, updates to Siri, and new customizable watch faces 
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Aluminum cases 
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Apple Watch Series 6 requires an iPhone 6s or later with iOS 14 or later.