New all-terrain navigation instrument , developed from the legendary GPSMAP 276c. While retaining all the established features of the model from which it is derived, many of the latest technological innovations have been added to the new GPSMAP 276Cx, such as reception of the two GPS and GLONASS satellite networks, a large and bright 5" screen that can be read even in bright light, a barometric altimeter, a 3-axis compass, and many additional modern navigation features. The instrument has as much as 8 GB of internal memory, and micro SD slot to add cartography on a card. The Real 276 Experience The new GPSMAP 276Cx was developed from the legendary GPSMAP 276C, Garmin's most versatile and powerful outdoor navigator ever designed. To ensure the real 276 experience, Garmin has kept the same user interface " even the keypad has remained the same as its predecessor. Fans of the 276 will appreciate the new navigator's extraordinary degree of customization and will be amazed at all the new features added over the classic 276. Advanced Sensor Technology The GPSMAP 276Cx's sensor technology has been completely updated. The device includes GPS and GLONASS tracking for optimized performance in difficult-to-receive environments