5 magnifying lenses - 1.0X, 1.5X, 2.0X, 2.5X, 3.5X, multiple lens options for your different needs. Extended lenses are positioned below the middle of the lens, with a U-shaped notch; this design allows for optimal magnification.and the closer the distance, the wider the field of vision, making it easier to observe the object.Humanized design - Comfortable rubber head padding, non-slip nose pads, and non-slip side cushions. Comfortable glasses frames for quick on/off or for a more secure fit; switch to the headbandelastic.Helmet design with strap - A helmet is included to prevent the magnifier from falling off and to reduce pressure on the bridge of the nose for longer use, thus reducing fatigue. This headband magnifier is also suitable for those who wear glasses.sunglasses and glasses.Bright light with 2 LEDs - The magnifier also features an LED light, which is powered by USB. The lens angle and the irradiation angle of the LED light source can be adjusted to ensure precise illumination of theA light source on the surface of the object being viewed makes it more convenient to use. Not dazzling, yet bright enough.Widely used - Individual lenses/magnifying lenses can be easily assembled and disassembled. The movable lens element is used to adjust the focal distance between the objective lens and the object, and the distance betweenThe lens and the eyes. Perfect headphone magnifier for close work such as for the elderly, sewing, crafts, beauty, painting, dentists, electricians, jewelers etc.