【Small size】Includes 54 pieces flexible NTAG215 NFC tags, Rectangle 9 x 18 mm. Small and portable, Fast Response. It's adhesive and easy to paste on the surface of most items, like your eyeglass frames, watch bands, phone case, as wearable device. 【Widely Application】Compatible with all NFC-enabled devices, and this nfc tag stickers's surface area is a one-third the size of a finger. You can paste the smart tags on your finger nail to quickly share your social information, electronic business cards, music; connecting wifi or bluetooth pairing; supporting access control system, etc. It's fashinable, making your life more colorful【Note: Please get close to the FPC Tags when sensing, as its sensing area is relatively small】 【NFC Chip】This NFC key tags built-in 215 chip, with 504-byte usable NDEF memory. Working frequency, 13.56MHz; Maximum gain value 1.5dbm; Standard 14443A; Number of reads and writes >=100,000 times. NTAG215 chips have read and write locking functions, which can be repeatedly edited or only read. Set to be edited or reset after reading only labels. 【Flexible Material】The NFC stickers tag smart Nail with adhesive backing and ntag215 chip will bend and fit according to the curvature of the finger. Made of quality flexible PET material, long - term wear can also keep cool. Reading distance: about 0 - 2 cm (depending on the signal strength of the reading and writing device). Power supply mode: non-contact data transmission and power supply. Working temperature: - 20 ℃ - 80 ℃, suitable for all kinds of high temperature and harsh environment. IMPORTANT USAGE NOTES To avoid reading/writing issues: * NOT a tracking or GPS device * Requires NFC writing app (NFC Tools / NXP TagWriter recommended) * Metal surfaces may reduce signal strength * Thick phone cases may affect scanning * Correct placement is required for stable reading (phone back NFC area) UPC 797495816550 ASIN B0H2QRD8J3 Size 18*9mm Color 54pcs Brand Name OKAVAD Item Shape Rectangular Unit Count 54.0 Count Manufacturer OKAVAD Material Type Polyethylene Terephthalate Number of Items 54 Number of Labels 54 Manufacturer Part Number FPCFB-215-54