The can be used to unlock doors, , transfer information. Through the frequency technology and connection to the function operation and sharing of data. ring by touching the area, to achieve the screen to unlock, application lock, quick start application, send read business , information and other functions. It is a great present choice for your loved ones. Features - Color: As shown. - Material: Stainless Steel. - Size: 8mm / 0.3inch in diameter. - Through the frequency technology and connection to the function operation and sharing of data. - ring by touching the area, to achieve the screen to unlock; application lock; quick start application; send read business , information and other functions. - Multi-functional ring, the main function is to store and exchange , as well as content and personal encryption unlock, support for , , , millet and other DNF-enabled . - Quickly start the application, in advance will need to quickly start the program startup written in the ring, when the ring the will automatically and start the program. - Touch unlock, hand wear ring touch unlocks, screen lock, application lock set (some need to ROOT, can use the function). - Lock / unlock the program, select the application you want to lock/unlock, write the ring, only the ring touch the to start the application, to protect personal . - Touch the sharing / personal memorandum, you can store private content in the ring, you can also share the business , password, graphic , can also be used as a private memo to unlock the only way to unlock. - No / waterproof, built-in ultra- DNF chip, no electricity to work, easy to wear. Package list: 1 x 8mm Tag Ring Wearable Rings Digital Ring for with Functions - Black(#7)