Headband is speedy to put on and take off, and interchangeable lenses with 3 magnifications. The size is one size fits all, so it can be used even with glasses on, so it can be used by anyone. It uses a lightweight metal band that fits the head properly, and weighs only 1.2 oz (35 g). You can use both hands freely, making it easy to work, and you can see it on both eyes for a sense of distance. Angle adjustable. Set includes 1.5x, 2.5x, and 3.5x lenses. LED light includes only "New Head Loupe Light"