To be honest, it doesn't bother me enough to run any sort of rigorous trial. Going by some trusted reviewers, GLONASS sucks an extra 20% during activities. I'

To be honest, it doesn't bother me enough to run any sort of rigorous trial. Going by some trusted reviewers, GLONASS sucks an extra 20% during activities. I'm never so far away from being able to charge it that such a small difference bothers me.