This hobby magnifier is a 3-in-1 LED lighted magnifer set. Crystal clear acrylic lenses and two super-bright LED lights ensure a crisp, bright-magnified image. To use, simply select one of the three included lenses and snap it into the base stand. The base stand allows you to use this as a free standing magnifier while the adjustable neck strap allows you to use hands free. You can also completely remove the lens and use the base as a book light. Requires 3 AAA batteries (not included). Contents:LED lighted base with clip-on base stand2x 110mm rimless round acrylic lens2x acrylic fresnel lens with 3x spot lens3.5x dual acrylic lensAdjustable length neck strap