High-quality multilayer coating on all lenses and prisms, while dielectric high-reflective multilayer coating is applied to the roof prisms, achieving 92% or higher light transmittance for bright and natural color fidelity; Phase-correction prism coating enhances resolution and contrast; Lead-and-arsenic-free glass used in all lenses and prisms; Magnesium alloy body is lightweight and extremely durable; Wider Available Interpupillary Distance Adjustment designed to fit virtually everyone-56mm-74mm; Locking diopter control maintains your personal setting; Long eye relief and turn-and-slide eyecups facilitate optimum eye position; Closer minimum focus distance-just 6.6 feet; Field of view = 362ft at 1000yds