Rucan NFC Multifunctional Waterproof Intelligent Ring Smart Wear Finger Digital Ring (7#)
Features: No charge, programmable read-only lock function, 7-byte serial number clone protection
Uses: set up smart lock, card recharge, smart phone unlock, phone important file lock, transfer files.
Lock and unlock your Smart phone or tablet quickly, hide the app when you leave your smart phone alone
Multi-functional NFC smart ring, the main function is to store and exchange personal information, as well as mobile content and personal privacy encryption unlock, support for Samsung, Huawei, millet and other DNF-enabled mobile phone
Size:6,7,8,9,10,11,12,13 (please refer to the size picture); Chip: NFC chip; Working frequency band: 13.56MHZ; Storage space: 144BYTES; Transmission rate: 106kb / s; Package:1 x Smart Ring