899ci HD SI Combo...:
*Internal antenna
*Faster processor
*Cannot use Navionics Platinum or Platinum+
*Comes with the XNT 9 SI 180 T (83kHz/200kHz 2d and 455kHz SI)...but can be upgraded to the XHS 9 HDSI 180 T (83kHz/200kHz 2d and 455kHz/800kHz SI)...
*New model for 2014...
898c HD SI Combo...:
*External antenna...
*Comes with the XHS 9 HDSI 180 T (83kHz/200kHz 2d and 455kHz/800kHz SI)...
*Legacy status...
Rickie