The GPSMAP 76 is designed to provide preciseGPS positioning using correctiondata obtained from the Wide Area AugmentationSystem. This unit features abuilt-in quad helix antenna for superior reception and can provide positionaccuracy to less than three meters when receivingWAAS corrections.

The GPSMAP 76 has an internal memory capacity ofeight megabytes. In addition,it comes with a built-in basemap of cities,coastlines, lakes, rivers,interstates, and interstate exit information and a database of nautical navaids.

This unit has eight megabytes of internal usermemory for storing optionalMapSource- detailed maps, including marinecartography. This memory is preloadedfrom the factory with worldwide cities(populations greater than 200,000) andnautical navigation aids such as lights, buoys,sound signals and day beacons.The GPSMAP 76 is also preloaded with tide data for the United States.

An extra-large display measuring 1.6"W x 2.2"H gives users a clear view ofinformation, while a waterproof case means theGPSMAP 76 will keep working welleven if it's been submerged in water. Even moreamazing, this unit will actuallyfloat if accidentally dropped in the water.