Humminbird 678c HD - 600 Series. Maximize your angling experience with the Humminbird 678c HD fishfinder. The 600 Series when screen size isn"t everything but advanced features are a must, the smart money is on the 600 Series. With an unbelievably clear, HD display, this incredible value delivers more options than you can shake a rod and reel at. Choose from Imaging Sonar, SwitchFire Sonar and GPS cartography. Get it on the water, and this bad boy is touch to beat. Because you don"t need to be a big fish, to put up a big fight. Model: 409410-1 The 678c HD features: 480H x 640V 5" Color TFT display with LED backlight DualBeamPLUS with SwitchFire Sonar with 4000 Watts PTP power output Upgradeable Software High Definition display Unit Size: Gimbal Mount - 6.9"W x 7.5"H x 4.5"DU Unit Size: Indash Mount - 6.9"W x 5.4"H x 1.25"D