Helmet Design with Strap: The spectacle holder can be replaced with a headband (included) to prevent falling and reduce pressure on the nose bridge for longer by reducing fatigue. Brights and Convenience: The head magnifiers also has a bright lamp with 2 LEDs, The angle of light can be adjusted up and down 60 degrees, easy to use, which is operated with 3 AAA batteries (not included). 5 Magnification lenses for All Tasks: 1.0X, 1.5X, 2.0X, 2.5X, 3.5X, multiple lens choices can meet your various requirements like dentists, electricians, jewelers, tailoring, crafts, beauty, painting and the elderly. More Comfortable To Use: A lightweight ergonomic frame with soft padding is available to fit your reading glasses.The headband can not only be adjusted to fit all head sizes, but also ensure a more comfortable and tight fit. Since the brightness of the camera and the brightness of the computer screen are different, the image color and the physical color may be a little different. Manual measurement, the size may also be a little cart, please understand, thanks.