I purchased this with a use other than a smartphone, but it was the wrong size and I couldn't use it, so I'm putting it up for sale. ■ This is a smartphone camera lens (0.6x) that allows for wide-angle photography, simply by clipping it onto your smartphone's camera lens. ■ The lens has FMC processing to prevent light reflection and glare for beautiful photos. ■ It employs a multi-lens structure that reduces "vignetting," the phenomenon where the periphery of the image becomes dark, allowing for clear photos. ■ It's a clip-on type that's easy to attach, and you can secure it firmly by tightening the screw. ■ It comes with a lens cap to prevent dust and scratches on the lens. Thank you for looking.