Product Description The 298C Sounder combines vivid color chartplotting with a powerful dual-frequency sounder in one space-saving, multipurpose unit. Compatible with the latest BlueChart G2 series marine cartography - and featuring an enhanced worldwide basemap that depicts shorelines, roads and surface features in richer detail - the GPSMAP 298C is loaded with smart navigation features. The unit's big 5-inch display offers split-screen capability, so you can view both map and sounder information simultaneously. And with 500 watts of power (RMS) - plus Garmin's exclusive See-Thru fish targeting technology - the built-in 50/200 kHz sonar paints a clear and accurate picture of everything worth watching under your boat.