Feature:1. Multi Functional: This smart ring can be used to unlock smart door locks, card recharge, unlocking smartphones, locking important files, one click file transfer, compatible with any device supporting NFC.2. Intuitive Operation: Touch your smartphone's NFC signal area with the smart ring to unlock screen, lock applications, quickly launch apps, send and receive business cards, website information, and more.3. Ultra Light Design: The smart ring features an incredibly lightweight body for a comfortable wearing experience that you may even forget it's there, allowing you to wear daily without burden.4. Ideal Gift: This smart ring makes a meaningful present for any occasion such as birthdays, anniversaries, Thanksgiving, Christmas, Hanukkah, or Valentine's Day.5. Advanced and Professional: The NFC ring is a high tech smart ring equipped with for Ntag213 chip. It applies the latest technology to make your life more convenient and secure.Specification:Item Type: NFC Smart RingMaterial: Titanium steel.Package List:1 x NFC Smart RingNote:NFC automatic setup currently only supports for IOS Phone XS and newer models, the system needs to be upgraded to for iOS 13 or later