Eyepieces

Waterproofing is always an advantage with binoculars and other optical devices when you are active outdoors. So-called IP codes indicate the level of waterproofing, and also the protection against the ingress of dirt or other foreign material such as sand.

If the device is waterproof it will have been tested in line with codes IPX4 or IPX4: the code IPX3 indicates that the device withstands water falling as a spray up to 60° from the vertical. The code IPX4 means that it is protected from water splashing from any direction.