1、Usage: High tech smart ring adopted Ntag213 chip, can be set to open smart door lock, card recharge, smart phone unlock, phone important file lock, one click file transfer, etc. 2、Specific Operation: Smart ring can unlock the screen by touching the NFC signal area of the phone, providing a more convenient and secure way to access your device. 3、Multifunction: NFC smart ring can also provide application program lock, quick start of applications, send and read business cards, website information and other functions. 4、Lightweight and Stylish: Made of metal material, the NFC ring is lightweight and comfortable to wear on your finger. With its minimalistic design, it adds a touch of style to your daily look. 5、Ideal gift: This smart ring is a meaningful gift. It is suitable for any scene or holiday such as birthdays, anniversaries, Thanksgiving, Christmas, Hanukkah or Valentine's Day. Item Type: NFC Smart Ring Material: Metal 1 x NFC Smart Ring