http://t.co/lU2wauqT - <br /><br />Top Deal Reviwe - DeLorme Earthmate PN-60 Portable GPS Navigator<br /><br />Technical Details<br />3 Axis electronic compass and barometric altimeter<br />Power mamagement system with ambient light sensor for optimal battery life<br />Exchange GPS Files to SD cards(including waypoints, tracks and geocaches)<br />Unrivaled Map and Imagery Choices<br />3.5 GB of user-available memory