The Magellan eXplorist 310 is preloaded with a world map; consisting of all the major and minor routes. The 2.2-inch transflective screen in this Magellan GPS receiver gives you clear readability even in bright sunlight. Waterproof; this handheld GPS receiver comes handy even when going river rafting or using it in wet weather. Charge it in the night and this Magellan GPS receiver will last you all day; having a battery runtime of 18 hours. With a 500 MB of user memory; this handheld GPS receiver lets you store additional maps; way points and other apps. You can also record the distance traveled and in what time; the speed and more; with the Magellan eXplorist 310; by just selecting the track summary option.