<p>Professional Optical Lens: The microscope lens attachment is made of 4 quality glass lenses instead of a cheap resinous lens. Each lens has 3-5 layers of coating to increase image quality. Start exploring the microworld with the mini microscope. (This is a very close microscope, the working distance is 0.4-0.4cm)</p> <p>Easy to use: The pocket microscope has a built-in LED light. It provides a bright working environment for the super close-up microscope (the LED ring lights up automatically when the objective cover has been opened). No app required, no specific phone case requirement. Simply clip the extra lens into your phone's main camera. It is a perfect gadget for observing plants, trichomes, coins, stones, skin, etc.</p> <p>Suitable for almost all mobile phones: the clip and the slider are integrated, without screws, without spring. Universal clip settings make the portable microscope compatible with almost all cell phones. The clip's maximum opening width is 2cm so you can use it with your phone case. (If your phone camera is convex, we suggest you use the lens with your phone case)</p>