Features: 1. **Versatile NFC Functionality**: Effortlessly connect to your smartphone with NFC technology. Easily bind your ring to your phone and access various applications like electronic business cards and smart home controls. 2. **Premium Stainless Steel Design**: Crafted from high-quality stainless steel, our NFC Smart Ring is not only durable but also stylish, making it a perfect accessory for any occasion. 3. **Ergonomic Comfort**: Designed for all-day wear, the ergonomic shape of the ring ensures a comfortable fit without any burden, allowing you to focus on your tasks. 4. **No Charging Required**: Enjoy the convenience of a battery-free design. Our NFC Smart Ring operates without the need for charging, making it hassle-free and always ready to use. 5. **Multi-Functional Access Control**: Ideal for attendance tracking, access control, and more. Simplify your daily routines with a single tap, enhancing your productivity and efficiency. Our rings are carefully crafted from stainless steel. Designed specifically for the interconnection of intelligent access control/attendance systems. The usage method is extremely convenient: Make sure your mobile phone has NFC function. Turn on the NFC function in the mobile phone Settings. Download the NFC function app from the app store, follow the instructions to complete the ring binding, and bring the ring chip close to the NFC sensing area of the phone. And shortcuts and application scenarios can be set as needed. The design is ergonomic, comfortable and burden-free to wear. Electronic business cards/attendance/access control/smart home control.