These are great binoculars for boating - in the Gulf of Mexico where we fish, regular binoculars are worthless as it is usually too rough. But these do the trick. Pricey but they work - that is until the little metal battery tabs/contacts break. This has been reported on other boating forumns like "thehulltruth" I was told by Nikon that it is not covered under warranty and the replacement part is $55 plus shipping. Mine broke when they were about 1.5 years old. Not nice.
Pros: Do what they claim to do
Cons: weak battery compartment contacts that break
This review was written in the old system and had content requirements that are different than reviews written today.