This post compares two premium GPS bike computers: the Garmin Edge 820 vs 520. These are identical in size and share many features, but there are some key differences that you should be aware of, if you are choosing which one to buy.
Here are the 6 key differences between the Garmin Edge 820 and 520. This post starts with a table comparing all of the impressive features of the Garmin Edge 820 and 520. Then it discusses the 6 differences between these two bike computers. Finally, it has a table that highlights just the differences between the Edge 820 and 520, so that you can see all the differences at a glance.