Features: External macro lens, focusing to 40-75mm distance to take photos, with 10X magnification. Optical glass, multi-layer coating, oil-proof and high-definition without distortions. Small in size and lightweight, thin for easy carrying and use. Universal for almost all smartphones with webcam in the market. Wide applications, for microcosmic such as circuit board, insect, butterfly, stamps, antiques, precised part and more.