This is my personal favorite headband magnifier. It has twin-beam, focused lighting and three levels of magnification, the main lens, the flip down lens under the hood (not shown)and the auxilary loop scene below. This provides magnifications of 1.8x, 2.3x, 3.7x and 4.8x. The beauty of the optics is that unlike other headband loops, the lens is one smooth fixture. The is not any bar running down the middle to distract your vision. This headband is even comfortable to wear even for people who have glasses like myself. The band is adjustable with a velcro strap in the back. Requires four AAA batteries (not included). My friend Dave G. at Warpaint Studio has one and loves it! My only comments to the design are the plastic clips on the battery case need to be handled with care and not forced when removing or replacing the cover.