Designed with its smooth and wide surface, this product can be an accessory to match with your clothes, which is drop-resistant and wear-resistant since it has strong hardness and high performance.You can use this product for function performing and data sharing since it is convenient to use and easy to operate, which can be used without any power supply.Made of stainless steel material, this product is durable and long-lasting.There are eight sizes that you can choose from.It can apply for Android NFC phone.Item Name: NFC RingMaterial: Stainless Steel Sensitive, Fashionable, Electronic ProductSize Details: Size: US 6, Circumference: 5.2cm/2", Diameter: 1.6cm/0.6" (Approx.)Size: US 7, Circumference: 5.4cm/2.1", Diameter: 1.7cm/0.7" (Approx.)Size: US 8, Circumference: 5.7cm/2.2", Diameter: 1.8cm/0.7" (Approx.)Size: US 9, Circumference: 6cm/2.4", Diameter: 1.89cm/0.7" (Approx.)Size: US 10, Circumference: 6.2cm/2.4", Diameter: 1.98cm/0.8" (Approx.)Size: US 11, Circumference: 6.5cm/2.6", Diameter: 2.06cm/0.8" (Approx.)Size: US 12, Circumference: 6.7cm/2.6", Diameter: 2.14cm/0.8" (Approx.)Size: US 13, Circumference: 6.9cm/2.7", Diameter: 2.2cm/0.9"(Approx.)Notes:Due to the light and screen setting difference, the item"s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x NFC Ring When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!