Easily installed. The dual-optics design of the lenses which allows you to use it with the two cameras on the dual camera system on the iPhone 7 Plus. Extremely compact size means it's full of functionality: The 6-in-1 lens design lets you quickly switch between the fisheye, wide-angle, telephoto and macro lenses. With the dual-optics design, you have 3 sets of lenses that will work perfectly with the dual camera system on the iPhone 7 Plus. Weighing in at only 2 ounces, you’ll barely notice the case on your phone. The slim and streamlined case is just 12mm, adding minimal thickness to your phone. Just snap the case onto your phone and install the lens into the case. To change the lenses, just slide the lens up and you can be sure it’s always ready to capture the perfect candid shot.