SI-TEX GPS Dual Frequency 600W Sonar System - 7 Color LCD w/Internal External GPS Antenna C-MAP 4D Card [SVS-760CF+]GPS Dual Frequency 600W Sonar System 7 Color LCD with Internal & External GPS Antenna & C MAP 4D Card The versatile SVS 760CF+ is a combination digital echo sounder and chartplotter with a built in 50 channel GPS receiver capable of running both C MAP MAX and Navionics Gold cartography. The 50 200 kHz SVS 760CF+ sounder features a powerful 600W output and a vertically oriented, sunlight viewable 7. 5" color LCD that optimizes the presentation of