[ Perfect Size ] black NFC sticker, circular/1 inch/25mm, mini size, making it easier to save. (Not used on metal surfaces) [ Paste Design ] Circular black stickers have self-adhesive properties and are easy to apply to books, tables, walls, and most surfaces. It is very convenient to use. The sticker material is PET, with a and glossy surface, wear-resistant, good stability, non-toxic and odorless, and good and safety. [ Scope of Application ] Compatible with TagMo and all Android phones and other devices that support NFC. You can use NFC stickers to make a card for the to invite you to become the role of the island . You can also use them to quickly share social media, music, business cards, connect to Wi Fi, and more to make your life more colorful. [ High quality chip ] The has fast response speed and stable performance. 540 bytes of memory (504 bytes available) provides enough storage space to quickly write the information you want, making your life more colorful. Colour:black Material:PET Package Contents: 50 x NFC Tags Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.