You'll spot the big ones easily on the Fishfinder 400C's crisp, ultra-bright 4" QVGA color display. A choice of dual frequency or dual beam transducers makes this a good choice for both freshwater and saltwater fishing. In the offshore setup, you'll get a true A-scope display for instantaneous sonar data. When configured for inland use (dual beam), a round flasher viewing option is provided. The 400 watt RMS dual beam version offers a wide fish-finding cone and reaches depths to 900 feet, while the 500 watt RMS dual frequency setup can go as deep as 1,500 feet. Features UltraScroll for screen updates at live-action speeds. And Garmin's plug-and-play CANet bus enables sonar data to be easily shared with compatible Garmin chartplotter displays.

The Garmin 400C fish finder utilizes a crisp, ultra-bright, 4-inch, full-color QVGA display with 320 x 240 pixels of resolution that lets you easily distinguish bottom detail and fish from background structure. This unit features easy, one-touch navigation through different functions via front panel control buttons, as well as UltraScroll for screen updates at live-action speeds. The 400C also features a backlit keypad for easier operation at night, and a new night mode function that provides optimum readability in low-light conditions.

The 400C is designed to be easily adaptable to both freshwater and saltwater conditions, with a choice of dual-beam or dual-frequency transducers. This unit comes with a 500-watt (RMS), dual-frequency transducer with a narrow beam that pierces the depths below your boat down to 1,500 feet. There is also a 400-watt (RMS), dual-beam transducer available that provides you with a wider fish-finding cone for better surrounding visibility down to a depth of 900 feet. Made to be upgradeable and expandable, the Garmin 400C includes built-in CANet connectivity that enables sonar data to be shared with a compatible Garmin chartplotter as part of a larger marine system. This unit weighs 1.5 pounds, and measures just 5.72 x 5 x 2.73 inches (W x H x D) allowing it to be placed virtually anywhere.