I downloaded my hike into google map and noticed a big difference between the watch reading on cumulative altitude and that in the google map. My hike yesterday registered 937 metres in the watch but in google maps it was only 342 in elevation gain/loss. Something I did not do correct? Is the watch correct or that in google map? However the distance was about the same at 5.2 km.
This item was purchased from Navi World via ebay on 30 June 2014 and I received it 2 weeks later. Looking at some of my recorded outings, the variability started in about early August. It did not caught my attention until this vast difference in altitude as described above.