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Features

Readiness app Vitals app with heart rate, respiratory rate, wrist temperature, sleep duration, and heart rate variability (HRV)5 Blood Oxygen app ECG app Heart Rate app High and low heart rate notifications Recovery HRV High‑frequency background heart rate tracking Irregular rhythm notifications Advanced Cycle Tracking app with fertile window estimates, retrospective ovulation estimates, and perimenopause and menopause support Medications app Mindfulness app with state of mind tracking Noise app Sleep app including sleep stages Sleep score Sleep apnea notifications Hypertension notifications (1)

Display

Always‑On Retina display with wide‑angle OLEDs and LTPO3 1Hz refresh Active area (42mm): 374 by 446 pixels, 326 pixels per inch Active area (46mm): 416 by 496 pixels, 326 pixels per inch Ceramic Shield 2 (aluminum cases) Sapphire front crystal (titanium and ceramic cases) 2000 nits peak brightness 1 nit minimum brightness (1)

Connectivity

All models Support for 2.4GHz and 5GHz Wi‑Fi networks Wi‑Fi 4 (802.11n) Bluetooth 5.3 Precision L1 GPS (GPS, GLONASS, Galileo, QZSS, and BeiDou) Second‑generation Ultra Wideband chip Apple Pay GymKit Models A3582 and A3587 Supports RedCap for 5G and LTE FDD‑5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n66, n71) TDD‑5G NR (Bands n38, n40, n41) FDD‑LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 66, 71) TDD‑LTE (Bands 38, 39, 40, 41) Support for Apple Watch For Your Kids International roaming (1)