The Lowrance Mark 4 HDI combo sonar and GPS unit is ideal for use on inland lakes. The broadband sounder works with downscan imaging for the sharpest displays on its multi window screen. This combo unit also gives you the ability to review your history and waypoints.
Specifications and Features:
Exclusive Hybrid Dual Imaging (HDI)
Optional chart upgrades include Lake Insight and Nautic Insight PRO and HD, Navionics Gold and HotMaps Premium, Fishing Hotspots PRO and Jeppesen C Map Max N
Create your own map
Easy to use page selector
Multi window display
Broadband sounder plus DownScan imaging