Free size. Approximate size: inner diameter 18.4mm, face size only is approximately 26mm in diameter. Weight is about 9 grams. Made of metal. There is a seam. A dome-shaped glass or glass-like material covers the design. ● Brand new. Unopened item will be sent. ● Made of metal. (Precious metals are not used.) ● Unisex. Good texture. ● We are unable to adjust the size. ● Welding is often slightly off-center on the face. Please consider this a characteristic of this product. Most of the same type are slightly off. Please understand. ※ Items other than the listed product are not included, even if they appear in the photo. ※ The design, color, and texture may slightly differ from the photo. ※ There may be minor imperfections from the manufacturing process. ※ If you purchase multiple small items, they can be shipped together, and you will receive a discount of 140 yen per item from the second item onwards. ※ Even if multiple items are shown in the photo, you will receive "one" item. ※ Some parts of the title are just related search keywords. ※ I can only communicate mostly from a computer, so replies may be delayed. Please understand. ※ Shipping usually occurs every other day. Sometimes it takes two days. Please understand. ※ Please also read the profile. Important things may be written there. Thank you.