Smart Rings NFC Multifunctional Waterproof Intelligent Ring Smart Wear Finger Digital Ring Smart black

Smart Rings NFC Multifunctional Waterproof Intelligent Ring Smart Wear Finger Digital Ring Smart black.Features: Water Resistant and no charging required. Lock and unlock your smart phone or tablet quickly, hide the app when you leave your smart phone alone. Control applications, you can write a fixed process list ahead of the time, and the ring will start the applications each time by simply touch. Share and transfer information, support all Android and Windows NFC mobiles. Multi-functional NFC