Use the 4 sunlight-readable dual-orientation touchscreen of the Garmin Montana 610 Handheld GPS guide you on your next excursion. You can choose between landscape and portrait modes for the best possible view of the map or data you are trying to interpret. Whether you are traveling by foot, boat, or car the free one-year subscription of Birds Eye satellite imagery helps you reach your destination. An included world basemap features shaded relief to help make physical features stand out.This unit utilizes both GPS and GLONASS satellites for quicker signal acquisition so you get a fix on your position approximately 20 times faster than GPS alone. The receiver also can interpret Wide Area Augmentation System (WAAS) signals so you can receive information from terrestrial antennas even when your view of the sky is obstructed.