5 Magnification Lenses for All Tasks - 1.0X, 1.5X, 2.0X, 2.5X, 3.5X in a storage box with cleaning cloth, multiple lens choices can meet your various requirements like dentists, electricians, jewelers, sewing, crafts, beauty, painting and the elderly. Headset Design with Strap - The glasses holder can be replaced with a headband (included) to prevent falling off and reduce pressure on the bridge of the nose for longer wear by reducing fatigue. More Comfortable to Use - A lightweight ergonomic frame with soft padding is available to fit your reading glasses. The headband can not only be adjusted to fit all head sizes, but also ensure a more comfortable and tighter wearing. Brights and Convenience - The head magnifier also has a bright lamp with 2 LEDs,This product uses USB to charge Lens focal length: 500mm, 330mm, 250mm, 200mm, 140mm Package contents: USB charging cable, instruction manual, headband, lens cleaning cloth, color box Product size: 215*150*185mm (after assembly) 215*150*185mm (aprs assemblage)