Simply insert the device into the sturdy mount in either portrait or landscape orientation, which can be attached to standard and oversized handlebars as well as stems. You are now ready for your next bike ride or mountain biking adventure. Compatible devices: GPSMAP 276Cx, Montana 600, Montana 600t Camo, Montana 610, Montana 619, Montana 610t Camo, Montana 650, Montana 680, Montana 680t, Monterra.