Apple Watch Series 3 - 42mm - Space Gray Aluminum - Black Sport Band isn't available.
Check your heart rate, and get notifications for low and high heart rate and irregular rhythm.3 Measure your workouts, and track and share your activity. Take calls, send and receive messages, and stream 50 million songs from Apple Music.4 Apple Watch Series 3 lets you do it all, even while you're away from your phone.