10X 15X 20X Magnification - Choose the magnification you need and see different magnification effects. These 3 magnifications can be quickly interchanged. This coin magnifier is great for everyday observation, such as inspecting gems, watches, coins, stamps, antiques, and more. 4 LED + 4 UV Lights - This handheld magnifier features 4 white LED lights and 4 UV lights. The bright LEDs are perfect for use in the dark or for seeing details clearly. The 4 UV lights can be used to check currency or view colorful objects, such as circuit boards and stamps. Simply press the button on the handle to turn on the 4 white lights, press a second time to turn on the 4 UV lights, and press a third time to turn off the lights. Acrylic Optical Lens - The unique square acrylic optical lens has a large viewing area (1.77 x 2.05 inches), making it quick and convenient for eye examination. The magnifier provides clear imaging and good light transmission. There are two size scales (0.5 mm, 1/16 inch) on the base for easy measurement. High-Quality Material - This jewelry magnifier is made of high-quality ABS plastic, which is durable and not easily damaged. It's very lightweight (weighing 4.71 ounces) and small (3.74 x 3.439 x 1.77 inches), so you can use it in your hand or pack it away. Wide Application - This is a professional adjustable magnifier, ideal for printing, crafts, embroidery, coins, jewelry, stamps, and more.