Innovative Vent Cradle Vehicle Mount designed for the Garmin Montana 680 / 680t - Adjustable Vent Clip Holder for Most Car / Auto Vent Systems Spring loaded vent clips designed to accommodate both horizontal and vertical oriented air vent systems. A vent mounted cradle base for use with the Garmin Montana 680 / 680t device. Holder is designed to adjust to accommodate the exact required dimensions (144.6 x 74.8 x 36.8 mm). Gomadic Holder is highly adjustable with sliding/rotating mechanisms on side and bottom ensuring easy access to all Garmin Montana 680 / 680t buttons and controls. Vent mounting system is covered by Gomadic Lifetime Warranty. Engineered using non-scratch and non-slip materials on all contact surfaces.