Raymarine i70s System Pack w/Color Instrument Wind, DST Transducers, iTC-5, and STng Backbone [T70216]i70s System Pack with Color Instrument & Wind, DST Transducers, iTC 5, 3M Backbone, T Piece, Power & 2 Backbone Terminators Instrument Data is Now Beautiful Maximum Visibility and Maximum Versatility The i70s multifunction gives you the flexibility to display instrument and navigation data that is most important to you. Equipped with a bold and bright 4. 1 display the i70s is easy to customize with digital, analog and graphical displays of depth,