Haptic alarm. This is pretty much THE main reason for me wearing the Apple Watch, as well as the crash detection with emergency calling. I am one of those light sleepers and my whole life I’ve ALWAYS woke up before the alarm because I can’t stand the sound of it suddenly waking me. This also means many nights I’ll wake up multiple times because my body is trying to beat the alarm. With the haptic alarm, it’s been a true godsend and helped me sleep better at night than I have in years. I can sleep and simply be woken up with gentle pulses instead of loud music or alarm. Secondly, I love riding motorcycles and often times I’m out in areas where it’s so sparse with people or land that if something happened to me, it literally could be days or longer before someone found me. The watch offers some peace of mind that god forbid something happened that help would be on the way.