Built using aerospace-grade metal and hand polished glass, the Moment 58mm Tele Lens provides 2x optical magnification when mounted over the camera lens of a single-lens phone or the wide camera of a multi-lens phone, as well as 4x optical magnification when mounted over the iPhone's telephoto lens using the Moment Pro Camera app. Built using a six-element design in four groups, this lens excels in portrait, landscape, travel, and sports photography. Moment's 58mm Tele Lens is compatible with Apple's iPhone, including the iPhone 13, as well as Google, Samsung, and OnePlus devices. Please note that this lens requires one of Moment's M-Series cases. For the iPhone 13, you will need a Moment case and a Drop-in Lens Mount. Note: In order to use this lens on Android phones, you will need a compatible Moment M-Series case. In order to use this lens on an iPhone, you will need a compatible Drop-In Lens Mount and Moment M-Series case.