Built around a robust High-Definition Optical System and multi-coated lenses, the Bushnell Banner R3 delivers eye-opening performance in a no-nonsense package. The EXO Barrier lens coating keeps the optical surfaces clear of water, oil, dust and debris, so you'll have a nice, bright image from first light to last. Anda |it's all backed by Bushnell's Unconditional Lifetime Warranty. HD Optical System provides maximum light transmission, contrast and resolution Multi-coated optics for increased light transmission Second focal plane DOA-QBR reticle EXO Barrier lens coating repels water, oil, dust and debris 1" single-piece shockproof aluminum tube Nitrogen purged, 100% waterproof and fogproof Backed by the Bushnell Lifetime Warranty