Humminbird 581 I Di Sonar/Gps Combo - $299.88

Down Imaging Easy-to-view, 5 monochrome LCD monitor 640x320-pixel 16-level grayscale display DualBeam sonar with 2,000 watts peak-to-peak output Internal 50-channel GPS chartplotting with built-in UniMap 83kHz/60 200kHz/20 250-watt RMS Navionics compatible 3,000-waypoint memory Inside hull or transom mounting GPS speed and temperature included SwitchFire offers two-mode viewing for return displays Advanced features included Split Screens, Freeze Frame and TruArch technology Dimensions: 7H x 7W x 4D Made in USA - $299.88