• Always-On Retina display with nearly 20% more screen area than Series 6 for improved visibility. • Crack-resistant front crystal, IP6X dust resistance, and swim-proof design for durability. • Measures blood oxygen levels and takes ECG readings. • High and low heart rate, and irregular heart rhythm notifications for health monitoring. • Mindfulness and Sleep apps for wellness tracking. • Tracks various workouts including tai chi, pilates, running, and swimming. • Syncs music, podcasts, and audiobooks for on-the-go entertainment. • Apple Pay for secure payments from your wrist.