1、Made of reliable materials of high density ABS environmentally friendly plastic, clearly acrylic optical lens, and sturdy metal. 2、Designed with LED lamp for auxiliary lighting to get a more precise operation. 3、Head-mounted magnifying glasses, freeing both hands to provides convenience for repairing. 4、Acrylic optical lens with 25mm effective diameter, magnification clearly and comfortable visual. 5、Apply for observing stamps, coins, jade ware, textile, or repairing industrial electronic devices, clocks and watches, etc. Features: Made of reliable materials of high density ABS environmentally friendly plastic, clearly acrylic optical lens, and sturdy metal. Designed with LED lamp for auxiliary lighting to get a more precise operation. Head-mounted magnifying glasses, freeing both hands to provides convenience for repairing. Acrylic optical lens with 25mm effective diameter, magnification clearly and comfortable visual. Apply for observing stamps, , jade ware, textile, or repairing industrial electronic devices, clocks and watches, etc. Specifications: Material: ABS+metal+acrylic optical lens Magnification: 20X Effective Diameter: 25mm Battery: 4 * 3V CR1620 button battery Item Size: 150 * 48 * 45mm / 5.91 * 1.89 * 1.77in Item Weight: 78g / 2.75oz Package Weight: 85g / 3.01oz Package Size: 17 * 7 * 6cm / 6.69 * 2.76 * 2.36in Packing List: 1 * Magnifiying Glasses 1 * Magnifiying Glasses