With low light performance that rivals even the most respected optics brands, Forge binoculars feature ED Prime glass, PC3 phase and dielectric coated BaK 4 prisms, Ultrawide Band anti-reflective coatings, and Bushnell’s exclusive EXO Barrier technology. With a split bridge design and waterproof construction, this binocular is designed for use in extreme conditions and yields extreme results. Exclusive EXO Barrier Protection - Bushnell’s newest and best protective lens coating molecularly bonds to the glass, repelling water, oil, dust, debris and preventing scratches. ED Prime Glass – Bushnell’s highest quality glass delivers amazing color, resolution and contrast, even in low-light conditions. PC-3 Phase Coating – Applied to the prisms, it enhances resolution and contrast. IPX7 Waterproof construction – O-ring sealed optics stay dry inside, when immersed in three feet of water for up to 30 minutes. Dielectric Prism Coating – Applied to the prisms, it ensures vivid color reproduction and allows 92% light transmission for bright images.