The HELIX 7 CHIRP MEGA DI GPS G4 fish finder features MEGA Down Imaging, Dual Spectrum CHIRP Sonar, AutoChart Live, Internal GPS and Humminbird Basemap built-in. An upgraded high-definition 7 Inch display will give you the best view of the many pre-loaded split screen view options so that you&';ll never miss a fish. Humminbird 4116101 Attributes a Display Size: 7 Inch LCD a Display Resolution: 1024 X 600 Pixels a Overall Dimensions: 10-1/2 Inch Length X 5.8 Inch Height X 3.68 Inch Depth a Sonar Compatibility: Dual Spectrum CHIRP Sonar a With Built-In GPS: Yes a Used To: Use To Find Fish And Identify Buoys/ Day Markers/ Hazards/ Marinas/ Contours/ a Depth Markers a Interface: Keypad a Waterproof: Yes a Point Of Interest: 2750 Waypoints a SD Card Storage: Micro SD Card