Key Highlights – Apple Watch Series 6 (44mm) Always-On Retina Display – Brighter outdoors, no need to raise wrist Blood Oxygen Sensor (SpO2) – Monitors oxygen levels in real time ECG App – Records electrocardiograms from your wrist S6 Chip + U1 – 20% faster, with Ultra Wideband & 5GHz Wi-Fi Always-On Altimeter – Real-time elevation tracking 18-Hour Battery Life – With fast charging (~1.5 hours to full) Water Resistant to 50m – Safe for swimming International Emergency SOS – Works without iPhone (cellular models)