What improvements does the FL-20 have over the FL-18?
The FL-20 has a flat screen that delivers a larger display that won’t trap in rain or snow and increases the viewing angle by 50%. It has two auto zoom ranges that split the screen to let you focus on the bottom 6 or 12 feet of the water column. It also has a night mode that allows you to cut the output of the LED display by 50% to avoid getting night blindness. The FL-20 also has a built-in low battery indicator.