The Helix family of compact fishfinders offers a best-in-class, widescreen color display and powerful professional-grade features at a terrific price. The 7" 256-color TFT display with 800H x 480V resolution recalls the 16:9 aspect ratio, but in a compact format. This allows for optimal viewing with enough room for side-by-side displays of sonar, DI, or GPS screens. Each unit also features the X-Press Menu Display keypad control thats quick and user-friendly. This Helix 7 DI GPS Combo functionality includes DualBeam PLUS and Down Imaging Sonar plus GPS chartplotting with an internal GPS receiver. Down Imaging Sonar with DualBeam PLUS and Switchfire creates detailed images with high-frequency sound waves emitted in ultra-thin slices. The sonar returns from these waves produce a sensitive "snapshot" of whats below your boat. The GPS comes with a built-in UniMap ba.