When you invest in a pair of binoculars, you no doubt want them to last for as long as possible.
After all, some versions of the items are not cheap and there is no point in wasting your hard-earned cash on a product that only works for a short period of time.
Bearing this in mind, you should assess the durability of the devices in the context of the environment in which you intend to use them.
For example, you may be seeking binoculars that you will simply utilise in your back garden to do a spot of bird watching.
Obviously, such items need not be particularly hard-wearing since they are unlikely to be subjected to harsh weather conditions or other potential hazards.
However, if you wish to use the products for hunting or other outdoor activities, you may want to consider getting waterproof versions.
If you are caught in a rain storm, there may be no choice but for the devices to come into contact with water.
This is also the case of products that are going to be used on boats. In such instances it is not only water from the skies that may cause problems, but also spray from the sea or river on which you are travelling that can affect your binoculars.
If you fail to get waterproof items, you may find the devices fog when they get wet or, even worse, cease to work.
On a more general theme, waterproof products are also less likely to have their lenses damaged by dust or dirt.