5 Interchangeable Glasses: There are 1.0X, 1.5X, 2.0X, 2.5X and 3.5X magnification lens can be choose for different hand work. High clarity optical acrylic lenses with good magnification in a solid case with lens holder, space-saving and protective. Easy to Assemble and User Friendly: Snap in and out the lenses are very easy; the lenses can be adjusted more than 90 degrees and be flipped up very easily when not in use. Interchangeable Headband: It comes both with eyeglasses style temples and a wraparound headband depending on your preferences, which makes this functional for those who wear glasses. Built-in 2 LED Lights: The LED lamp is bright and has a wide range of adjustment about 45, no worries about light condition anytime. The light is powered by 3 AAA batteries. (Not included) Versatile Applications: Make your hands free while doing the job such as eyelash extensions sewing, needle work, knitting, cross stitch, embroidery (1X to 2.5X ) or close working like soldering, coins, stamps, jewelers loupe, modeling, watch repair, crafts, eyelash extensions, manicures, etc. (3.5X)