I buy this to replace a older Garmin since the cost to update the map be close to the cost of a new unit . this be a great gp unit in every respect except it do not have a external volumn control . I prefer to cut the volumn on that annoying voice -lrb- recalculate -rrb- when I be in area that be familiar . the volumn control on this device be bury in the menu - annoying .