Garmin Quatix NMEA Marine GPS Sport Watch High-sensitivity, GPS-enabled marine watch with altimeter, barometer and 3-axis compass Waterproof to 50 meters - with Full-featured GPS navigation Sail racing features -for a more efficient and controlled sailing experience -Virtual starting line - Tack assist - Countdown timer with large, easy to read digits Tide charts display detailed tide data - Preloaded worldwide base map Compatible with GNT 10 NMEA Transceiver - Wirelessly stream and view NMEA 2000 data such as wind speed & direction, depth and more on your wrist - Automatic wireless MOB activation - Garmin marine autopilot remote control capabilities