This is a great little GPS. This GPS is perfect for me. I had it on my mountain bike for about 3 months. I've done a few bumpy rides and the GPS hasn't failed or fallen off. I've updated the firmware a few times since Lezyne released updates, but it's very easy to update. Also, I had an issue with the rubber grommet covering the charging port, but I called Lezyne and they fixed it. It was very easy to work with them. This is a fantastic little GPS for the money.