Super-fast 10 Hz GPS/GLONASS – With the integration of a 10 Hz GPS/GLONASS receiver, the 721xs refreshes position and heading up to 10 times per second. It displays constant on-screen location and proves to be incredibly accurate when marking waypoints Advanced Sonar Support- Built-in support for a wide selection of Garmin transducers, including 50/200 kHz, 77/200 kHz, DownVü and SideVü scanning sonar and CHIRP. In addition, it will also support Minn Kota and MotorGuide trolling […]