Lowrance Mark-5x Pro 5-Inch Waterproof Fishfinder 5-Inch LCD Screen 480 x 480 High Detail Display, 16-Level Gray Scale Definition. Crisp, Bright White LED Screen and Keypad Backlight. 480 x 480 High Detail Display, 16-Level Gray Scale Definition. Crisp, Bright White LED Screen and Keypad Backlight.