lens, can for focus to 40-75mm distance to take photos, with 10X magnification. glass, multi-layer coating, waterproof, oil-proof and high-definition pictures taken without distortion. Compact in appearance and lightweight, ultra-thin for easy carrying. Wide application, perfect for microcosmic such as , circuit board, , , for butterfly, compound eyes of flies, stamps, antiques, parts, . for almost all for smart phones with webcam in the market.