We build optics with Forsight. Thoughts such as, spend enough time on the water, and your equipment will spend some time in it. The H2O series binoculars are 'O'-ring sealed and nitrogen purged to completely lock out moisture should you spill, take one overboard, or simply run into foul weather along the way. Rubber armouring with textured pads give a sure grip in slippery situations. Multi-coated optics and premium BaK-4 prism glass maximise light transmission and image clarity. You'll see how a little planning on our part, goes a long way to magnify your adventures on or around the water.