Here you can find spare parts, handlebar mounts, wristbands or sensors for speed and cadence as well as more practical accessories for your Garmin device.
There are many good lights on the market, but this Varia RTL radar rear light also shows me when a car is nearby, how fast it's moving, and warns me if it’s approaching. I simply attached it to my road bike using the standard Garmin mount, connected it to my Garmin Edge 1040 Solar, and I could see the approaching cars on the display. Plus, it's super bright and highly visible to everyone behind me. A tail light with great added value that, for me, absolutely justifies the higher price.