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On a tour, how do I record a GPX track with the least battery use and budget?
On single day rides I just use Osmand on my phone, but it absolutely murders the battery. From what I read, recording the track prevents the phone from going to sleep and there is no way around it, so I'm guessing other apps would have the problem as well.
Should I go for some low end Garmin or a knockoff? A smartwatch? Some other GPS device? I don't know what's out there.