The Aven Tools 26115 headband magnifier is designed for a wide range of hands-free magnification needs. Applications include mechanical processing, electronics repair, jewelry inspection and appraisal, clock and watch repair, carving, hobby work, and more. The 26115 includes 5 auxiliary lenses (use up to two lenses at once), and a built-in swing-out lens that can combine for a maximum 14x magnification.