Humminbird 409430-1 678c HD DI Fishfinder with Down Imaging (Black) 640 x 480 5-Inch color VGA display 2D/Down Imaging Sonar Temperature 640 x 480 5-Inch color VGA display 2D/Down Imaging Sonar Features 640V x 480H pixel screen Power Output (Max): 500 Watts (RMS); 4000 Watts (Peak-to-Peak) 1500 ft depth capable 256 Color TFT Display Features industry leading Down Imaging and DualBeam PLUS sonar technology