After yesterday's "tasting tour" (65 km above field, forest and meadow paths, single trails, trips on stairs and cobbles) I'm thrilled. The device has been reliably maintained. Nothing wiggled or slipped. For safety's sake, I have my Garmin anyway additionally secured with a safety rope to the handlebar, should something break on the mount ... but I'm really surprised at how well the holder fulfills its purpose.
RECOMMENDATION !!!