1)GPS model lets you take calls and reply to texts from your wrist

2)Measure your blood oxygen with an all-new sensor and app

3)Check your heart rhythm with the ECG app

4)The Always-On Retina display is 2.5x brighter outdoors when your wrist is down

5)S6 SiP is up to 20% faster than Series 5

6)5GHz Wi-Fi and U1 Ultra Wideband chip

7)Track your daily activity on Apple Watch and see your trends in the Fitness app on iPhone

8)Measure workouts like running, walking, cycling, yoga, swimming,and dance

9_Swimproof design

10)Sync your favorite music, podcasts, and audiobooks

11)Pay instantly and securely from your wrist with Apple Pay

12(High and low heart rate notifications and irregular heart rhythm notification

13)Built-in compass and real-time elevation readings

14)Can detect if you've taken a hard fall, then automatically call emergency services for you

15)Emergency SOS lets you get help from your wrist

16)watchOS 7 with sleep tracking, cycling directions, updates to Siri, and new customizable watch faces