The latest and arguably greatest of garmins handheld range is the brand new update of their legendary gpsmap series which prefers a rugged button design built to stand up to the toughest conditions the gpsmap 64s utilises glonass satellites combined with its high sensitivity receiver for a faster stronger signal lock even under tree cover and wireless technology means you can receive emails and texts as well as sharing your adventures live on social mediar r the 64s discover