Moon MX GPS Mount Light, Black and Red

My Garmin Edge 820 fits perfectly. The light itself has good brightness for its small size. The many modes are straightforward, however it can sometimes be tricky to change between them (buttons should be redesigned to provide better feedback). This is minor compared to what it does for such a compact sized light and given the features.Mechanically the connection of the lamp to the mount bolting to the stem could be improved. Plastic rails on back of the lamp slide into grooves at front of the metal mount and the lamp is secured with a catch. There is a very slight play in the lamp. To avoid annoying vibrations I reduced the play with a thin plastic 'spacer' between the lamp and mount.Not 5 stars because of these two annoyances, but I'd buy the light again.