High-contrast monochrome 5 LCD dual frequency (50/200kHz) 300W Fish Finder The LS-4100 is a dual frequency fish finder designed for small pleasure craft. It features a waterproof 5” high-definition silver bright LCD screen that offers a remarkably detailed picture of fish and bottom structure. With a resolution of 240 (H) x 320 (V) pixels, it has the highest resolution in its class! The LS-4100 offers dual frequency capabilities, both 50 and 200 kHz, and has an outstanding 300 W RMS (2,400 Watt peak-to-peak) output power, making this fish finder the leader in its class.