HELIX 5 DI G2 FishfinderThe HELIX 5 DI G2 with an improved user interface and operating system, features a brilliant 800H x 480V, 5" 256 color display with backlight. Down Imaging and DualBeam PLUS sonar with 4000 watts PTP power output. Maximize your angling experience with the Humminbird HELIX 5 DI fishfinder system.CHIRP Frequencies (Out of Box Transducer)455 kHz:  420-520 kHz800 kHz:  790-850 kHzMaximum Depth:  600 feetDOWN IMAGING SONARDown Imaging Sonar -- Get a fish-eye's view of what's happening below your boat. Incredible images are created with High-frequency sound waves.SWITCHFIRESwitchFire Sonar -- Take command of how your sonar returns appear with our Clear and Max Modes.DUALBEAM PLUS SONARTwo beams combine for great detail and a wide coverage area. Use the narrow beam for high-accuracy returns and bottom. Use the wide beam when you want a larger search area.UPGRADEABLE SOFTWAREUp-gradable Software -- Access software updates to enhance the performance of your Humminbird unit through our My Humminbird section of the site.WARNING: This product can expose you to chemicals including 1,3-Butadiene which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.