Model 2517 is a HandsFree hanging magnifier with a powerful LED light built-in. The main lens is 2x power magnification and a 4x spot lens is included. The lens diameter is 110mm. The 2517 includes an adjustable cord which loops around the back of your neck to hold the magnifier in place for up-close work. This magnifier is great for knitting or sewing, model making and many other activities where both hands are needed.