I am looking for recommendations for GPS trackers to record the daily grazing movements of goats, cattle, and camels in the Mountains of Dhofar, Oman. In the past, I have used a tracker from Garmin that recorded a location every three seconds (which was great), but the battery lasted only about 12 hours (which was not so great) (see paper attached). Ideally, I would like to use a device that records the location very often (seconds rather than minutes) with a battery that lasts months rather than days. All your suggestions are more than welcome.