Optisight Binocluar Magnifying Visor provides hands-free magnificaiton for more accurate and efficient viewing. The visor tilts up for normal viewing, or down for magnifying. Optisight brings work closer into focus, reducing eye strain and fatigue. High strenghth plastic visor will not break. Supplied in assorted colors. The Optisight includes three precision optical grade acrylic prismatic lens plates in 3x, 4x, and 5x power.