Rengu NFC Multi-function Smart Ring

1. Through the NFC radio frequency communication technology and mobile phone connection to the mobile phone function and sharing of data. 2. No charge / depth waterproof, built-in ultra-sensitive NFC chip, no electricity to work, easy to wear. 3. Multi-functional NFC smart ring, the main function is to store and exchange information, as well as mobile content and encryption unlock. 4. Lock / unlock the program, select the application you want to lock / unlock, write the smart ring, only the ring touch the phone to start the application, to protect privacy. 5. Beautiful appearance, easy to use. Specification: Features: 1. Through the NFC radio frequency communication technology and mobile phone connection to the mobile phone function and sharing of data. 2. No charge / depth waterproof, built-in ultra-sensitive NFC chip, no electricity to work, easy to wear. 3. Multi-functional NFC smart ring, the main function is to store and exchange information, as well as mobile content and encryption unlock. 4. Lock / unlock the program, select the application you want to lock / unlock, write the smart ring, only the ring touch the phone to start the application, to protect privacy. 5. Beautiful appearance, easy to use. Specification: Material: Metal Size: about 4*5*0.5cm/1.57*1.97*0.2in Product Name: NFC Multi-function Smart Ring Size: 6/7/8/9/10/11/12/13 inch Package List: 1 * Smart Ring Instructions for use: 1. First, check if your smartphone has NFC function. It can usually be found in the system settings. If no relevant options are found, contact with the manufacturer post-sale support, or search on if the smartphone model has NFC function and confirm its NFC area. 2. If your smartphone has NFC function, turn on the NFC switch, search your app for the software which apply NFC, download and install them. 3.