The VIVITAR "ADVENTURE ON," 8x 200mm Lens Set TELEPHOTO Mobile Phone Set is a high-quality telephoto lens designed specifically for mobile phones and tablets. With a maximum aperture of f/3 and a focal length of 200mm, this lens allows for capturing distant details with precision. The zoom feature makes it easy to focus on distant subjects, while the universal mount ensures a secure fit on all devices. Made with durable plastic material and originating from Japan, this Vivitar lens set is a reliable choice for those looking to enhance their mobile photography capabilities.