DONEGAN OPTICAL-OptiVISOR LX Binocular Headband with Optical Grade Lensplate #7-Magnifies 2-3/4x Power at 6 inches. Perfect for anyone whose profession or craft requires close accurate work with both hands free! The adjustable side pivots allow the visor to tilt at your fingertips and a dial adjustment headband that conforms to comfortably fit all head sizes. The LX has a genuine leather padded comfort band with orthopedic felt for extra comfort. Lightweight lenses and tough materials; designed to last a lifetime. Not a safety device; do not use in place of safety glasses or face shield.