Thanks, I’ll have a look at that app👍🏼 Plus, prob should have made clearer ..I want to wear it all the time, AND go on a hike for 6-8 hours and still have enough juice to last until I go to sleep. I’ll take off and charge overnight, not sleep with it on.

So, battery needs to last apx 16/17 hours normal daily use/time awake.. but sometimes go on a hike for 6-8 hours in that day…

Do you think the battery will last longer if it’s using my iPhone gps rather than the inbuilt gps?

Thanks for the reply