I agree 100% with Jony. I am a cyclist and I already use my an app on my iPhone to send a link to my wife so she knows where I am while I am out riding. However, if something bad happens (serious crash, hit by a car, etc.) where I was unable to call for help, she probably wouldn't even look to see where I am until I was so late in coming home that she started to worry. Having that auto "call for help" if I crash and quit moving for 60 seconds could literally save my life. And, although I don't think I actually need the ECG function, I am looking forward to having it just in case.
I having been wearing my Series 2 for 2 years now but will be ordering my Series 4 AW in about 8 hours.
I having been wearing my Series 2 for 2 years now but will be ordering my Series 4 AW in about 8 hours.