[30X magnification] -30X magnification optical glass lenses are very suitable for daily observation of general projects. It has a lens with a diameter of 1.08 inches, which is very fast and convenient for quick ophthalmic examinations. Double layered lenses provide clear imaging and good transparency.[3 LEDs+UV lamps] - The magnifying glass includes 3 white LED lamps and 3 UV lamps. Bright LED lights are suitable for use in the dark or to clearly see details, and 3 UV lights can inspect currency or see colored items such as circuit boards and stamps. Simply press the red button on the side to turn on 3 white lights, and a second press will turn on 3 ultraviolet lights. Press the third time to turn off the light.[Adjustable Height] - The magnification is fixed, but the focal length can still be adjusted to see three-dimensional objects more clearly, such as circuit boards, jewelry, etc. You can adjust the length until the protruding part is clearly visible and observe the unevenness of different items. The bottom of the ruler is detachable, so you can also remove it for better and faster observation.[Compact and Lightweight] - It is very light (weighing 2.5 ounces) and small (2 x 1.8 x 1.8 inches), so you can use it in your hand or in your pocket. It also comes with a sturdy PU leather case for easy storage.Widely Applicable - It is a professional adjustable optical glass magnifying glass that is very suitable for printing, handicrafts, embroidery, coins, jewelry, stamps, small magnification, etc.Color: BlackMaterial: Plastic+MetalSize: 47x47x51mmPackaging content:1 x 30x magnifying glass1 PU leather case