Watchesout for your heart. With the ECG app, Apple Watch Series 9 is capable of generating an ECG similar to a single‑lead electrocardiogram. 5 And with the Heart Rate app, you can get notifications for high and low heart rate as well as an irregular rhythm. 6. Measure your blood oxygen. Activityrings show your daily activity, including your active calories, total steps, and workouts completed. steel case size. Carbon neutral combinations available 14. Always-On Retina display Up to 2000 nits. S9 SiP. ECG app is available on Apple Watch Series 4 and later (excluding Apple Watch SE) and can generate an ECG similar to a aluminiumcase size. 45mm or 41mm aluminium or stainless steel case size. 49mm titanium case size . with up to 3,000 nits of brightness — the brightest display Apple has ever designed. Large enough to see up to six lines of workout metrics at a glance. ECG app is available on Apple Watch Series 4 and later (excluding Apple Watch SE Comparethe latest Apple Watch models including Series 8, Apple Watch Ultra and Apple Watch SE. 44mm or 40mm case size. 45mm or 41mm case size. 49mm case size Carbon neutral combinations Always-On Retina display. Up to 2000 nits. Always-On Retina display. Up to 3000 nits Chip. S8 SiP — Not AppleWatch Aluminum case with Sport Band or Sport Loop Retina OLED display 1000 nits brightness; Chip. S3 SiP with dual-core processor; W2 Apple wireless chip; Connectivity. Dimensions. Aluminum case - 38mm Height: 38.6mm; Width: 33.3mm; Depth: 11.4mm; Case Weight (GPS): 26.7g; Thenew 40mm version has a screen size comparable to the older 42mm watch, but with a display that’s more akin to the 42mm one. The 44mm, on the other hand, is only slightly larger than the 42mm TheSE also lacks an always-on display, meaning the watch turns into a black square on your wrist when idle. Apple Watch Series 5: Apple Watch Series 4: Size options: 41mm or 45mm: 41mm or AppleWatch bands are available in a variety of styles and sizes. Display: Always-On Retina LTPO OLED display; Flat sapphire crystal display; Up to 3000 nits maximum brightness; 1 nit minimum brightness; Chip: ECG app is available on Apple Watch Series 4 and later (excluding Apple Watch SE) and can generate an ECG similar to a single a3btGX.

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