" Combination 10Hz high-sensitivity GPS chartplotter and sounder with our exclusive Garmin HD-ID target tracking technologybr Built-in satellite receiver for highly accurate position velocity and time data 10 times a second Offers true position and heading data smoothly and accurately especially evident when coming out of turnsbr Supports multiple Global Navigation Satellite Systems -including GPS GLONASS Galileo2 QZSS2br Dual microSD card slots for optional mapping andor user data Please Note echoMAP series is not compatible with BlueChart g2 Visionbr Multiple mounting options -new bail mount and flush mount designs with cable management or choose our all-new exclusive flat mount option br Garmin echoMAP 70s GPS with Transom Motor Mount Transducer and Worldwide Basemap"