GPS unit easily attaches to the cradle/unit bracket ; Alternative to windshield & dash mounts ; Compatible with nearly all nuvi(R) 5" & smaller models, Garmin Drive(TM) 50 series, Garmin DriveSmart(TM) 50LMT, iPhone(R) 5 active mount & universal smartphone mount ; Not compatible with Garmin DriveLuxe(TM), Garmin DriveAssist(TM) & 6" or 7" models ; May not fit all air-vent designs;