Switch between 5 optical lenses using a simple and release Magnification power of the Head magnifier: 1.0X, 1.5X, 2.0X, 2.5X, 3.5X Scratch-resistant acrylic reduces weight There are two brightness levels which provide excellent light for illuminating detailed surfaces.Two levels of brightness is available by pressing the switch on the top of the headset magnifier See your work pieces or text magnified up to 350% original size with high Perfect Glasses for close work like sewing,, beauty, needle work, knitting, for cross, embroidery, painting and Headlight with 2 super-bright LED powered by 3 batteries (excluded Comfortable eyeglass frame with rubber nose-pads.Alternate between wearing it as glasses or headband The included Head strap can be attached with ease to a more secure fit