I have a Garmin Fenix 3, and the vibration wakes me up easily. It also goes well over a week between charges, even using the GPS heavily. Long battery life is i

I have a Garmin Fenix 3, and the vibration wakes me up easily. It also goes well over a week between charges, even using the GPS heavily. Long battery life is important for a watch you are going to use as an alarm, since you lose the convenience of charging overnight.