Specifications: Name: Magnifying Glasses : ABS acrylic lens Size: about 155 55 85mm 6.1 2.17 3.35in Glasses Legs Opened: about 175 155 55mm 6.89 6.1 2.17in Gross Weight: about 98g Magnification Times: 8 times, 15 times, 23 times Lens Focal Distance: about 62mm 0.2in about 33mm 0.12in about 21mm 0.07in Color Box Size: about 160 72 51mm 6.3 2.83 2.01in Battery Model: LR1130 button battery Lighting Source: 2 LED lights Packing List: Magnifying Glasses 1(with Button Battery) Instruction 1 Notes: Due to the lighting effects and shooting angles, there is color difference in the product, please understand. Due to anual easurement, there is tolerance in the product size.Multifunctional Applications: The head-mounted with light has a wide range of uses, and it is very suitable for close work, such as reading, watch or circuit repair, crafts, jewelry identification, eyelash extension, welding, painting, etc. It is very suitable to help watch repairers, jewelers, elderly, short-sighted or short-sighted people observe nearby objects. Perfect Design: This magnifying glasses with telescopic legs, with adjustable flip brackets. Both lenses are equipped with LED lighting, which is very convenient to use when the light is dim. Monocular Observation: We recommend using only one eye of the binocular to observe the object, because when using two glasses at the same time, focusing will fail. You can use the two lenses alternately to eliminate visual fatigue and effectively improve your work. Please note: This magnifying glass is suitable for close-range work, please observe the object when close enough to the target. Interchangeable Lens: The magnification times of our head-mounted magnifying glasses: 8 times, 15 times, 23 times. It can meet your needs for close work. It is recommended to choose the lens with appropriate magnification according to the size of the observed object. The magnification can be quickly interchanged. Head-Mounted Design: The head-mounted and hands-free magnifying glass is an ergonomic spectacle frame, which can effectively prevent the magnifying glass from falling and reduce the pressure on the bridge of the nose. It is light and does not slip, ensuring firmness and wear resistance, and reducing long-term fatigue. You can also free your hands and focus on the objects you want to observe.