Humminbird APEX 16 VX MSI+ Chartplotter/Fishfinder w/Transom Mount Transducer [411500-1VX]APEX 16 VX MSI+ Chartplotter Fishfinder with Transom Mount Transducer The APEX 16 VX MSI+ CHARTPLOTTER provides the clearest sonar imaging on the sharpest multi function display that anglers have ever seen. Industry leading MEGA Imaging+ and Dual Spectrum CHIRP sonar come standard, with even more performance from a dedicated sonar channel for accessory 2D CHIRP transducers up to 2kW. See it all clearly with a 15. 6" Full HD touchscreen that provides