COMES WITH 3 LENS PLATESThe Sight-Booster Head Magnifier Kit is a well made unit and will provide years of use. Three lens plates are included with this head magnifier for a wide range of magnification.(1.75x,2.25x,2.75x) No tools are necessary to change the visor magnifier lens plates. A soft pliable Velcro adjustment provides a perfect fit. The visor magnifier flips up when not needed and can be worn with eyeglasses. All lens visor magnifier plates are hard coated.