Nikon offers separate warranty coverage for their binoculars' optical, non-optical, and electric components. The lifetime warranty applies to the optical systems of the Nikon binoculars assuring the components will be free from defects for the life of the product. The non-optical aspects are covered by a seven-year warranty, and the electrical components are covered by a one-year warranty. For specific terms and conditions, it is best to check the warranty card that comes with your binoculars or the Nikon website.