[ Size ] The package contains high-quality NTAG216 NFC labels with a diameter of 25mm/1 inch. [ Chip ] NTAG216 chip, with 888 bytes of memory, readable, encrypted, and locked, with faster read and write speeds and larger storage capacity. Life: 10 years, 100000 frictions [ Material ] The circular label is made of environmentally friendly PET material. The is smooth, wear-, and glossy. Circular stickers have stickiness and are easy to stick to the of most items. (Not supported on metal surfaces and strong magnetic fields) Compatibility: Compatible with TagMo and all Android phones and other devices that support NFC. You can use NFC tags to quickly share social media, music, business cards, connect to Wi Fi, establish a smart home, and more. By providing sufficient storage space, you can quickly write down the information you want, making life more colorful. Colour:As Shown Material:pet Package Contents: 500 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.