Apple Watch Ultra has juice for about 10-13 hours of active GPS activity tracking time. Non-Ultra Apple Watch does less. My Garmin Epix2 can do about 24 hours w

Apple Watch Ultra has juice for about 10-13 hours of active GPS activity tracking time. Non-Ultra Apple Watch does less. My Garmin Epix2 can do about 24 hours with full battery, Fenix series does a bit more.