Magellan eXplorist 600 Water Resistant Hiking GPS Electronic compass - The built-in electronic 3-axis compass points you in the right direction Full color screen - The 16-color screen makes reading maps and GPS information easy with vibrant graphics in all lighting conditions. Unlimited SD Card Expandability - Your eXplorist 600 features SD card compatibility for unlimited memory expansion. TrueFix GPS technology takes advantage of 14 parallel channels, supported by WAAS Store up to 5 track log files, each with 2000 track-points to the internal memory