Illuminated Multi-Power Head Magnifier Set, 4 Lens Plates. Multi-Coated Acrylic Lens. Magnification: 1.7x, 2x, 2.5x, 3.5x. Combined Magnification: 3.7x, 4.2x, 4.5x, 5.2x, 5.5x, 6.0x. 2 Lenses Can Be Attached at The Same Time. 2 Bright White LED Bulbs. LED Light Is Detachable. Angle Of Led Light Can Adjust to be Vertical or Horizontal. Adjustable Head Strap With Rotating Dial. Requires 2AAA Batteries (Batteries Not Included).