This Lightcraft USB Magnifier Spectacles and Headband is a versatile set, designed to make detailed precision tasks so much easier. The set includes a spectacle frame and interchangeable headband, providing magnification and lighting while keeping both hands free for you to work. There are five lenses included, as well as an adjustable LED spotlight with a rechargeable battery built in. The spectacles have a comfortable, lightweight frame with an elastic headband option and adjustable nose rest. Pack size: 15 x 21 x 6.5cm (5.9 x 8.3 x 2.6 inches) Comfortable, lightweight frame with elastic headband option and adjustable nose restFive precision ground hardened lenses with magnification: 1.0x, 1.5x, 2.0x, 2.5x and 3.5xFocal lengths from 75-350mm (3-14”) Adjustable lens and LED spotlightLens: seven positions front to backSpotlight: three positions (up to 45° tilt)Built-in rechargeable battery (includes USB cable for charging)Lightcraft USB Magnifier Spectacles and Headband