Features Long Lifespan: Ultra-light, scratch-resistant hardened binoculars with long lifespan. The movable magnifier lens slot can adjust the distance between the eyes and the lens according to different needs, ensuring that the light source accurately illuminates the surface of the observed object, which is more convenient to use. Multiple Magnifications: 5 interchangeable lens plates with different magnifications for improved applicability, switch between 5 optical grade optical lenses with a simple click and release system. Lighting: 2 bright LED lights can provide enough light in any situation and can be used in dim environment, this magnifying glass light can be used as a headlight at night. Just plug the USB cable into the magnifying glass, connect the other end to a power source, and it will automatically charge. Dual Headband Wearing Mode: You can wear this head-mounted magnifier on your head like glasses. Ergonomic frame design. The temples can be detached and replaced with elastic straps. This headband magnifier is very lightweight so you won't feel any burden or discomfort. The headband can be adjusted according to the user experience, easy to use. Wide Range of Uses: For low vision reading, for dentistry, surgery, research, for easy crafting, sewing, etc. Suitable for close work such as dentists, electricians, jewelers, sewing, crafts, beauty, painting and the elderly. Specification: Item Type: Head-Mounted Magnifier Material: ABS+acrylic optical lens+metal accessories Model: 9892B2C charging Product Size: Approx. 215 x 125 x 145mm / 8.5 x 4.9 x 5.7in Product Magnification: 1 times, 1.5 times, 2 times, 2.5 times, 3.5 times Lens Focal Length: 500mm, 330mm, 250mm, 200mm, 140mm Size: Approx. 500mm / 19.7in 330mm / 13in 250mm / 9.8in 200mm / 7.9in 140mm / 5.5in Lens Size: Approx. 95 x 33mm / 3.7 x 1.3in Lighting Source: 2 LED lights Power Parameters: 5V, 0.1W, micro-USB Battery Parameters: 300mAh rechargeable lithium battery Package List: 1 x Magnifying Glass Bracket1 x USB Cable1 x Wipe Cloth1 x Yellow Cloth1 x Head Rope1 x User Manual 5 x Lens Package List 1 x Magnifying Glass Bracket 1 x USB Cable 1 x Wipe Cloth 1 x Yellow Cloth 1 x Head Rope 1 x User Manual 5 x Lens