Specification

-GPS model lets you take calls and reply to texts from your wrist
Large Retina OLED display
-Up to 2x faster processor than Series 3
Track your daily activity on Apple Watch and see your trends in the Fitness app on iPhone
-Measure workouts like running, walking, cycling, yoga, swimming, and dance
Swimproof design
-High and low heart rate notifications and irregular heart rhythm notification
Sync your favorite music, podcasts, and audiobooks
-Built-in compass and real-time elevation readings
Can detect if you’ve taken a hard fall, then automatically call emergency services for you