The Sightmark Solitude 8x42mm XD binocular uses extra-low dispersion glass to correct optical color defects caused when different light wavelengths do not converge at the same point after passing through optical glass. Engineered with Bak-4 roof prisms, the Solitude features an advanced, straight tube light system, achieving maximum light transmission and optimum brightness. Its prisms and lenses are fully broadband multicoated, and an innovative magnesium bridge makes the unit noncorrosive and durable. Designed to withstand harsh conditions, the Solitude 8x42mm XD has a rubber-armored, nitrogen-filled, O-ring sealed body, making it waterproof, fogproof and dustproof. Twist-up, adjustable eye cups provide a comfortable custom fit, helping to correct eye relief in any viewing position. MSRP: $299.97. Contact: www.sightmark.com