Product Description Feature: Specification(12X Telephoto Lens): 12X magnifying lens, great for watching football match, concert and sight-seeing journey and natual photos gives fabulous visual enjoyment. Compact size,easy to install and operate,and convenient to carry. Objective lens diameter:20mm Maganification:12X Angle of view:70 degree Specification(Fisheye Lens): Angle of view:198° Magnification:0.28X Lens Construction:3 elements in 3 groups Max Diameter:25mm Length:15mm Specification(Wide Angle Lens): Magnification: 0.63X Lens Construction:2 elements in 2 groups Max Diameter:20mm Length:5mm Specification(Macro Lens): Magnification: 15X Lens Construction: 1 element in 1 group Max Diameter:20mm Length:6mm The shot distance is between 10~15mm Compatible with many brands of smartphones.