Small but Powerful! an Incredible 15x Magnification! A Three-Item Set of an Ultra-Light Mini Loupe 15X Magnifying Glass (Black), a Maintenance Cloth and a Phoenix Long-Term Warranty! Field of view: 20; Size: 30 mm tall, 35 mm wide; Magnification Rate: 15x Uses: Best for inspecting printed materials and objects with flat surfaces. How to use: Put your eye close to the lens and look through. The field of view will be magnified. Maintenance: Comes with a special fiber cloth Safe and secure with a long-term written maker's guarantee (45 days). If by any chance you are dissatisfied with the product, please contact customer service. We will soon issue a refund or send a replacement product.