Garmin Edge 20
Go the extra mile. Edge 20 captures essential stats from your ride, including time, distance, speed, total ascent and location. Perfect for tracking progress or mapping out your daily commute on Garmin Connect.
Features and Information
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I use this on my road bike & my mountain bike. Apparently it is fairly accurate on the road bike. On the mountain bike it was 17.4% short the one time I did an accurate comparison. I use it for both anyway because it is easy to download to Strava. I just accept the fact that the offroad downloads are showing less miles than I actually ride. I thought GPS was supposed to be exact but it is not. I have been in touch with Garmin technical support. I am trying to figure out if they sell anything that is more accurate & if so how much it will cost.