Ideal for outdoor enthusiasts, the Garmin eTrex Vista HCx waterproof navigator is a unique combination of GPS, altimeter, and electronic compass. While the barometric altimeter displays the precise altitude, the electronic compass in this Garmin GPS receiver offers bearing information at all times. The GPS feature of the Garmin eTrex Vista HCx, on the other hand, helps you find your way around unknown routes. Thanks to the high sensitivity feature, this Garmin GPS receiver locks onto satellites even under tree cover or when near tall buildings. What�s more, this waterproof navigator can attain position corrections from WAAS, making its positioning data all the more reliable.