This smart ring is a fashionable wearable electronic product that connects with your cell phone through nfc radio frequency communication technology to operate cell phone functions and share data, without any power supply and with high level waterproof performance. The ring has a built-in nfc chip and requires a cell phone with nfc function to use. By touching the nfc signal area of the phone, the smart ring can realize the functions of screen tomb unlocking, application locking, quick start application, sending and reading business cards, website information and so on.