Headband Magnifier Features: · Flexible lens combination for higher magnification. · Detachable LED light device. · The tilt degree of LED light is adjustable. · Thumb screw to adjust the tilt degree of lens. · The belt size can be adjusted freely. Application: · Operate or read at dim or dark place. · Assemble or repair small fittings. · Check the finished product. · Also good for work such as carving, handcraft, sewing, Q.C and repairing engineer. Specifications: · Lens material: Acrylic resin (Processed by crack-proof rigid coating). · Lens size: 2 ‚ 3 89x29mm; 1 Single-lens diameter: 28mm. · Magnification: 3 : 1.8X ; 2 + 3 : 2.6X ; 1 + 2 + 3 : 5.8X · Use two AAA batteries (not included)