Summary: My first Garmin 405 lasted 4 years and I loved it. Not everyone's a fan of the bezel, but once you get used to it, I found it very easy to use. I was disappointed when it was discounted so I was thrilled to see it on Amazon. What I like about this watch is you can use as many or as few of the features as you want so if you want all the bells and whistles they're there, if you don't, you can use it as a basic GPS.
Summary: This part works well. It is better and more affordable than buying a new watch. It is a little tricky to get the old one off and the new one back on, but a tool is provided. I would recommend that you look into watching a video to give you a better understanding of what to do. It should take about 15 minutes to complete.