We have and eTrex 20 and eTrex 30x that we used for geocaching, so I had been using the Garmin bike mount to keep track of my data. However the eTrex 20 somehow popped off while I was riding and was lost (after searching a 6 mile stretch several times.)

Decided to try this Ram Mount setup and it works great!

The cradle is removable from the mount with a 1/8 turn and is very solid. It would also work on a smart phone with the right adapter and let you change the orientation from portrait to landscape with a 1/4 turn and doesn't stick up too far from the stem.

Standard diamond mounting so your device will fit with the right cradle.

https://www.rammount.com/part/RAM-HOL-GA48U

https://www.rammount.com/part/RAP-274-1U

roog

I use the standard Garmin mounts on my Garmin 64. On that type of mount you slide the GPS forward to remove it, I use a rubber band to hold it into the mount so it does not slide forward. And for those rare times when I did not slide it into the mount correctly, I use a short string on my GPS to keep the GPS near the bars if it falls off. I think it has fallen off twice or maybe three times, but some of those times were before I added the rubber band (over the antennae in the photo). When it fell off, it hung from the string until I could stop and re-position it.