MarCum Showdown 5.6 Digital Sonar System Higher contrast display produces better resolution 20-degree Transducer 8,000-watts Peak-to-Peak Power 1/2-inch Target Separation Moveable Zoom  Infinitely Adjustable, anywhere in the water column. 10 levels of Interference Rejection. 25 Sensitivity settings. Ice-Mode activates Internal Heater to aid LCD in extreme conditions.