The focus has been PRE-FIXED at the factory and everything from approx. 25 metres to infinity will be in focus for people with normal eyesight even spectacle wearers. Easy to use NO FUSS NO FOCUS means you can pick them up and see those markers or other boats instantly without having to try and focus while the boat is tossing around and one hand is busy hanging on.
They are waterproof so will take all the spray and even a dunk in the ocean if you accidentally let go of them (rule number one is always put the strap around your neck).
ACCESSORIES INCLUDED WITH ALL SURF LIFESAVING BINOCULARS:
Case and Strap
Floating Binocular Strap