On the Garmin devices, you start recording when you are performing an activity. The idea is that when you're running, riding, whatever, you start recording it a

On the Garmin devices, you start recording when you are performing an activity. The idea is that when you're running, riding, whatever, you start recording it as needed. The GPS doesn't run unless you're active. You can leave the other sensors like HRM and pulseox enabled when outside of "activities," and bluetooth is connected by default when in an activity or not, so I don't know where your "everything is turned off" assertion comes from. So this is 73 hours of actually being active. Even if you're moving all day, you wouldn't ever set it to record GPS data while you're resting, and you'd over double the battery life from what you describe. I'm a moderately active person, riding and/or running several hours a week, and have an older Garmin device with HRM always on and pulseox enabled during sleep. I charge the thing maybe once a week, usually during a shower after a run. There's really just no way you can squint at this and come to the conclusion that Apple is in the same ballpark on battery life.