This headband magnifier allows you to work on tiny objects in a hands-free manner.It provides six types of magnifications which can be combined freely for higher magnification suitable for different applications such as mechanical processing electronic timepieces jewelry work and many more. Features: Six sets of interchangeable lenses of different magnification can be combined freely for 21 combinations. Headband style allows hands-free magnification more efficient and convenient. Equipped with two LED lights with colored light caps to create warm and cool . Acrylic optical lenses are scratch-resistant and durable. Ideal tool for reading and inspecting small print text parts coins jewelry and more. Specifications: Color: Black & White Material: ABS + Acrylic optical lenses Magnification: 3X 4X 5X 6X 7X 10X (21 combinations) Focal Length: 20-166mm : 2 LED lights Battery: 3 * AAA Battery(Not included) Item Size: 200 * 160 * 78mm / 7.87 * 6.29 * 3.07in Item Weight: 95g / 3.35oz Package Weight: 216g / 7.61oz Package Size: 16.5 * 11.2 * 8cm / 6.49 * 4.4 * 3.14in Packing List: 1 * Eye Loupe 6 * Interchangeable Lenses 4 * Light 1 * Cleaning Cloth 1 * User Manual (English)