Display size: 2.6" W x 3.3" H
Display type: QVGA
Waterproof (IPX7)
A Fishfinder works using sonar (sound) technology, similar to those that submarines use to detect objects at various depths and distances. A sonar works by sending out an electronic impulse from the unit to the transducer. This impulse is transmitted into a sound wave by the transducer, at which point it is beamed through the water column. The sound wave will now travel downward until it reaches the bottom structure - it is at this point that it will be bounced back to the receiving unit. The sound wave will also "travel" through any objects found between the lake bottom and the surface of the water (fish or baitfish). When the signal is received, the unit will then make its interpretations, finally showcasing the results on the screen. Power is rated by Watts. Higher wattage means greater distance penetration.
The versatile Fishfinder 400C has a super bright, high-resolution 4-inch display and is great for finding fish in freshwater. With the 400-watt (RMS) dual frequency transducer, you can reach a depth of 900 feet.
