These lightweight acrylic Over-The-Neck Hands-Free Magnifiers are worn around the neck, leaving both hands free. Viewer is held in place with two foam bumpers that rest on the chest, and an adjustable cord. The Standard model provides 1.5x magnification, with a bifocal lens inset that provides 3x magnification. The Lighted model provides 1.5x magnification, with a bifocal lens inset that provides 6x magnification. Both models have a 4" (10cm) diameter viewing area. Lighted model requires two "AA" batteries (not included).