Humminbird Helix 7 GPS Chirp MSI G4N [411940-1] Marine Navigation & Instruments | Marine Monitors Provides Great Tasting Drinking Water:

Provides Great Tasting Drinking Water: Offers fresh

The light features a 316 stainless steel trim ring and a built-in on/off switch that is backlit with a blue LED so that it is easily located even in the darkest of lockers

Deck plate hole is 3/4"-10

Quad-Blade Chopping Design: The advanced quad-blade system efficiently grinds waste

Round Louvered Vents allow air in while keeping water out

Humminbird Helix 7 GPS Chirp MSI G4N [411940-1] Marine Navigation & Instruments | Marine Monitors Provides Great Tasting Drinking Water:Helix 7 GPS Chirp MSI G4N The HELIX 7 MEGA SI GPS G4N fish finder features MEGA Side Imaging, MEGA Down Imaging, Dual Spectrum CHIRP Sonar, AutoChart Live, Internal GPS, and Humminbird Basemap built in. An upgraded high definition 7" display will give you the best view of the many pre loaded split screen view options so that you'll never miss a fish. All HELIX 7 G4N models support Ethernet networking, Bluetooth(R), NMEA 2000(R), and are compatible