Specification :

The FCV620 is a dual frequency ( 50 kHz and 200 kHz) Color LCD Sounder featuring Furuno' s DSP technology that displays underwater conditions in 8, 16 or 64 colors on a super-bright 5.6" LCD screen.
You’ ve probably heard about digital fish finders, but aren’ t quite sure what the difference is. The main difference is the filtering capabilities and auto adjustments. Our new FDF ( Furuno Digital Filter) technology helps adjust gain, STC “ Clutter� and output power, as well as suppress main bang ( the echoes just below the transducer.) It also makes the picture clearer and easier to decipher. But even the best digital filter won’ t help unless you start with a solid basis, such as Furuno’ s renowned fish finder technology.