This model has individual focusing system for each eye that allows you to make fine adjustments to suit your eyesight. Most peoples left and right eyes have different focusing ranges so being able to focus at different distances means that you will get a clearer, sharper image than you will with fixed focus binoculars. However, it also means you need to set your focus every time you go to use them.
When precise focusing is paramount then you need a binocular that you can focus.
The Marine Zone 7X50 Individual focus with compass has the advantage of having an integrated oil filled floating rose compass that you can read when looking through the binocular. Press the night light button and you can read the compass at night.
Magnification - 7X
Objective Lens - 50mm
Field Of View - 6.6 degrees
Weight - 1150g