I am out to purchase a (dedicated) GPS device for the outlined below use cases. Trouble is, I have never owned a GPS-enabled device. Furthermore, general articles on "how to purchase sports GPS" seem to vague. What features am I supposed to value most? What "type" of device do I need?
Ski trekking at about 2000m elevation, up to a week without electricity. I use a map, but if a (heavy) fog falls, I could be depending on the device for up to 2-3 days straight.
Bicycle trekking on rough mountain paths, up to two weeks without electricity. Again, I would carry a map, but when in doubt would need the GPS so as not go off path and waste half a day wandering around.