Specifications:5 interchangeable lenses in powers 1.0， 1.5， 2.0， 2.5 3.5X scratch-resistant acrylic reduces weight.Comfortable eyeglass frame with rubber nose-pads or switch to headband for more-secure fit.Perfect for jewelry work， watch repair， arts & crafts or as general reading aid.Headlight with 2 super-bright LED - powered for 30 hours by 3 button-cell batteries (included).See your workpieces or text magnified up to 350% original size with brilliant clarity.Highly-versatile magnification tool used by professional jewelers for extra-fine detail work like diamond setting or watch repair.Great vision aid at home or work， popular for electronics repair， embroidery， coin stamp collecting or as a general reading aid.Five interchangeable lenses in magnification powers/focal range (viewed object distance from lens) 1.0X 24"， 1.5X 15"， 2.0X 7-11"， 2.5X 6-10" and 3.5X 4-7".Made from high-density acrylic， the lenses are polished much like glass lenses and offer excellent clarity - but at a fraction the weight. Surface-hardened to help prevent scratches set includes protective storage case.Lenses snap into holder that flips lenses up & out of way when not in use.Comfortable eyeglass frames for quick on/off or for more secure fit， switch to elastic headband.Type: LoupeColor: BlackProduct Multiple: 1X， 1.5X， 2X， 2.5X， 3.5XMaterial: Plastic， Acrylic LensFeatures: with 3 Pcs LR1130 Button Batteries， 5 Lenses， 2-LED Light， with Head BandSize: 230mm x 135mm x 70mm/9.06" x 5.31" x 2.76" (Approx.)Notes:Due to the light and screen setting difference， the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Loupe(with 3 Pcs LR1130 Button Batteries)1 x Box1 x Head Band1 x English/Chinese User Manual