This magnifying glass built-in 6 LED lights, 3 white lights for generally magnified observation and 3 UV lamp for money detector magnifying glass. These energy-efficient LED lights are designed to help you read at night or in dark places. 30X Magnification 25mm Dual Lens: 25mm / 0.98 inch in diameter, this double-layer optical glass lens provides clear image and good light transmission. The 30X lens is perfect for miniatures, jewelry or professional inspection. Solid and Durable: Made of solid zinc alloy with black paint. There are two precise scales: 1/16 inch and 0.5 mm on the base. You can quickly measure the size of the object. This microscope magnifier is quite durable and not easy to damage. Hands-free and Easy to Use: The focal length of this table magnifier is fixed and does not need to be adjusted. Simply place the magnifier anywhere on the table and place the object in the middle of the scale. Placez simplement la loupe n'importe o sur la table et placez l'objet au milieu de l'chelle. White lights and UV lights are easily turned on/off by one button. Mini and lightweight: The very portable size of 60 * 52 / * 51 mm (/2.36 * 2.05 * /2.01in), makes it convenient for handheld use. Designed for gemstones, jewelry, coins, stamps, stones, watches, hobbies, antiques, models, photo industry, etc. Features: Multi-layer combined optical lens reduces deformation, high light transmittance, wide field of view and more accurate display of dual-standard plate. Two-color ring light LED light source, two-color switching, evenly fill the light. Applicable to stamps, coins, identification prints, ancient calligraphy and painting, textiles, etc. Specifications: Material: metal, double-layer optical glass lens. Product multiplication ratio: 30X standard Product size: 60 * 52 * 51 mm / 2.36 * 2.05 * 2.01 " Usage method: Observation method 1: Leave the magnifying glass close to the object to be observed, and keep the distance between the human eye and the object to be observed unchanged. Then move the hand-held magnifying glass back and forth between the object and the human eye until the image is large and clear. Observation method 2: magnifying glass as close as possible to the eyes. The magnifying glass does not move, moving objects until the image is large and clear.