Get down-imaging and traditional 2-D sonar in five new Humminbird DI units that range in price from $299.99 to $799.99. Down-imaging sonar provides a picture of structure beneath the boat, while the 2-D sonar helps locate fish. All DI units come with 5-inch screens, and operate at 200, 455 and 800 kHz frequencies. At the lower price point, the monochrome 570 DI features only DI/2-D sonar. At the top end, the 788ci HD DI Combo comes with a color display, 50-channel GPS chart-plotting capabilities, an internal antenna, dual SD card slots and upgradable software. All models ship with a new high-speed transducer. The 570 DI Portable features a monochrome display, a suction-cup transducer, 7Ah battery and charger. Call 800-633-1468 or visit www.humminbird.com.