I bought two of these for my kids to use with their smartphones, but one was enough. It's a waste to throw the other one away, so I'm selling it. It's unopened, so all the contents are included. You can use it with your smartphone. 〈Product Details〉 【Product Number】AP-005 【Magnification】18x 【Objective Lens Diameter】30mm 【Eyepiece Diameter】15mm 【Prism Material】BAK4 【Weight】96g 【Size】18 x 37 x 123 (mm) ※Instant purchase OK ※New and unopened. Although it is new, unopened, and unused, please contact the manufacturer if there are any initial defects. Returns are not accepted. ※When shipping, it will be wrapped in bubble wrap.