Humminbird 581 i Combo Sonar/GPS - $249.88

Combo GPS/sonar 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 include Split Screens, Freeze Frame and TrueArch technology Dimensions: 7"H x 7"W x 4"D Made in USA. - $249.88