1) MG81007-B 4 Lens Optical Head Band Handsfree Magnifier Visor . 2) 1.5x,2.0x,2.5x,3.5x Multi power. 3) High quality with optical lens. Able to achieve wide angle viewing through the double lens' two square glass. Adjustable sturdy head band can fit many sizes. Corrective glasses can be worn while wearing the magnifier. Hand are completely free.