If there are fish to be found, youll find them with a Northstar Explorer 438 dedicated fishfinder. Northstars Explorer 438 range of color fishfinders have sophisticated sounder technology. With our ease-of-use engineering, in a range of sizes and single/dual frequency combinations to suit your needs. The Northstar Explorer 438 is compact, yet powerful, digital color sounder that offer unmatched screen detail.  Feature digital sounder technology to improve the quality of the sonar images displayed on screen. The Northstar Explorer 438 also offers the fisherman a choice of advanced sonar displays such as A-scope, split-screen variable zoom and a choice of color palettes.  The 256-color spectrum shows at a glance the true nature of the bottom structure and target detail to help identify habitat. Northstar Explorer 438 delivers full color performance at a great price.