Apple Watch Series 10 Aluminium Case with Sport Band GPS - Jet Black, 42mm In the Box Apple Watch Series 10 Band Apple Watch Magnetic Fast Charger to USB-C Cable (1m) Controls Digital Crown with haptic feedback Side button Double tap gesture Siri with on‑device processing Chip S10 SiP with 64‑bit dual core processor 4‑core Neural Engine 64GB capacity Sensors Electrical heart sensor Third‑generation optical heart sensor Temperature sensor1 Compass Always‑on altimeter High‑g accelerometer High dynamic range gyroscope Ambient light sensor Depth gauge Water temperature sensor Health and Wellness ECG app2 Cycle Tracking app with retrospective ovulation estimates3 Heart Rate app High and low heart rate notifications Irregular rhythm notifications4 Medications app Mindfulness app with state of mind tracking Noise app Sleep app including sleep stages Sleep apnea notifications5 Display Always‑On Retina LTPO3 display Wide‑angle OLED Up to 40% brighter when viewed at an angle Edge‑to‑edge display Ion‑X front glass (aluminum cases) Sapphire front crystal (titanium cases) Up to 2000 nits maximun brightness 1 nit minimum brightness 326 pixels per inch Operating System watchOS 11 watchOS is the world’s most advanced wearable operating system, with apps and features designed to keep you active, healthy, safe, and connected.