LC1764 LED Headband Magnifier. Fully adjustable headband with built-in LED light with 4 precision ground lenses with focal lengths from semi-close to very close. Includes a protective case for lenses and 2 AAA batteries. A must tool for close-up projects where light and magnification are needed such as hobby, craft, reading, sewing, etc. Lens magnifications are: 1.2x, 1.8x, 2.5x, and 3.5x.