I'v been using my Varia with the Edge 1000 for a couple of weeks, using both firmware versions. Very pleased, the device normally detects vehicles (cars and motorcycles) long before I can hear them. No false positives or false negatives (so far) either around town or out in the countryside.
So, does the unit store any of the data from the Varia in the .fit file for the activity, or is it just a "dumb" unit that displays the information on-the-fly only?
Thanks