The feature-packed Nitro binoculars warrant best-in-class clarity and low light performance by means of a carefully designed optical system, Ultra-Wideband lens coatings, and PC3 phase coated BAK-4 prisms. Bushnell’s patented EXO Barrier lens coating technology delivers clarity in any condition. Comes with Bushnell's transferable full lifetime Ironclad Warranty. ED Prime Glass - Bushnell’s highest quality glass delivers amazing color, resolution and contrast, even in low-light conditions. 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. 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.