Pentax 8 x 43 DCF SP Series Binoculars Nitrogen-filled magnesium-alloy waterproof body (JIS Class 6) and protected with a full-body rubber housing Exceptional image quality and close focusing with edge-to-edge sharpness Inner-focus optical design incorporating hybrid aspherical eyepiece lenses High-resolution phase-coated roof prisms Scratch-resistant hydrophobic coating on exposed objective and eyepiece lenses, and multi-coated optical elements