Product parameters: Product size: 34*60mm Weight: 35g Observation range: 3 m and above The lenses are coated with blue film Magnification: 12 times Field of view: 16 degrees Objective lens diameter: 18MM Exit pupil distance: 2.3mm Eye point distance: 10MM Selling point: 1. The product is very convenient and simple to use, and easy to disassemble, stable and anti-skid 2. The product is equipped with optical glass lens comparable to professional camera, with high penetration and wear resistance, high definition and no dark Angle 3. Focus can be carried out by manual fine-tuning to make the picture clearer. Clockwise rotation can make the distance clearer and counterclockwise can make the near place clearer 【12X LONG DISTANCE SHOOTING】: The 12X cell phone telephoto lens allows you to capture the scenery far away clearly and provide you a high resolution close-up pictures, make your short-sighted phone into a telephoto. 【TELESCOPE & MONOCULAR FUNCTION】: Thanks to the high-class glass and great zoomable function, the 12X lens can also used as telescope or monocular to help you view distant objects, sceneries, games and concerts more clearly. take this lens and enjoy your moment. 【LIGHTWEIGHT & PORTABLE】: Want to take some beautiful pictures but hate to carry those bulky and pricey equipment? This portable and lightweight 12X optical zoom lens would be your perfect choice, the upgraded durable case stores and protects all the lens kit snugly and safely, very convenient for carrying in pocket. Ideal for outdoor sporting events, concerts, scope, camping, fishing, and travelling. 【EASY TO USE】: No need any complicated steps, just clip the lens on your cellphone camera and align, manually fine-tune the lens focal ring to get the clear image quality. Then you can capture all your memorable moment. Great choice for both hobbyists and photography pros. 【UNIVERSAL COMPATIABILITY】: Compatible with most types of phones, including compatible with iPhone 8/7/6s/6Pluse/SE/5S, Galaxy S5/S6/S7/S8 and other Android smart phone.