After my old Garmin fitness tracker died and my very old Garmin computer started fading, I decided to upgrade to something that could be used for both. I went with the S model to fit my small wrist, and while still larger than I'm used to, it is not overly bulky. Works great for all kinds of fitness tracking, phone notifications, and spotify playlists (when I don't want to take my phone for a run). As a bike computer, it connected easily to my existing heart rate band and cadence/speed sensors on my Trek. Using the navigation requires creating or uploading a route into Garmin Express and then exporting to the watch, but the navigation on the watch itself works well (tiny screen but the prompt beeps are helpful). I mount the watch to my handlebars using a rubber holder I got online, and it is sturdy and visible. Overall, very happy with the purchase.