Trophy Xtreme8x 56mmGreat wide field of view. The ultimate objective lenses deliver a light gathering performance that must be seen to be believed.FULLY-MULTI COATED OPTICSAll air-to-glass surfaces feature multiple layers of anti-reflective coating. Fully multi-coated optical systems deliver the brightest, highest-contrast images with the least amount of eye strain because only a very small percentage of light is lost before it reaches the viewer’s eye.PC-3 PHASE COATINGA chemical coating applied to the prisms to enhance resolution and contrast for the brightest and clearest images possible.WATERPROOF/FOGPROOFProducts are O-ring sealed and nitrogen purged for total waterproof and fogproof protection. These models can withstand complete immersion in water and stay dry inside. The interior optical surfaces won_t fog due to rapid temperature change or humidity.LEAD FREE GLASSLead-free glass means we use no lead in the glass lenses or prisms, By using enviro-friendly materials, we’re not only helping you see the outdoors in stunning clarity, we’re doing our part to keep them beautiful.BaK-4 porro prismsFully multi-coated lenses for maximum light transmission and optimum brightnessHeavy-duty, 100% waterproof/fogproof construction3 step twist-up eyecups allow quick adjustment for optimum eye reliefLarge center-focus knob for precise focusi