This Magellan RoadMate GPS gives a bit extra. The Magellan 4.7" GPS is recognized as a free map update unit. Register your unit with Magellan's free Content Manager and you are entitled to one free map update. Redeem when your maps are older — a year or two years from purchase. A 4.7" screen gives you noticeably more map to view. Enjoy the larger screen size — a Magellan exclusive.