Features 1、Smart Ring: Adopts the fourth generation radio frequency identification technology and for Ntag215 IC chip, supports for ISO1443A/B and 15693 standard protocols, and has a transmissing rate of 106k bit/s. 2、Applicable Scenarios: This smart ring is suitable for municipal card swiping, access control, attendance, electric vehicle keys, NFC electronic business cards, payment authentication encryption, BT or WiFi pairing, and other scenes. 3、Polishing Finish: With mirror polishing technology, this smart ring has a glossy appearance, ensuring comfortable wearing without the need for battery or power supply, making it fashionable and elegant in daily wear. 4、Ceramic Material: This smart ring is made of excellent ceramic material, with strong resistance to falling and wear, mild touch, and delicate texture. The compact and lightweight design makes it easy to wear. 5、High Performance: This access control ring has excellent toughness and temperature resistance, with IP68 waterproof and dustproof, suitable for various harsh environments, you can use it with confidence. Specification Item Type: Smart Ring Material: Ceramic IC Chip: For Ntag215 Transmissing Rate: 106k bit/s Chip Frequency: 13.56mHz (IC Chip) Induction Distance: Desktop Reader, distance of more than 3CM Erase Write Times: For EEPROM data read times greater than 10W times Ring Size: No.10, Ring Circumference: Approx. 65mm / 2.56in, Inner Diameter: Approx. 19.8mm / 0.78in Package List 1 x Smart Ring