Features: Experience the convenience of keyless access with our wearable ring, a secure and innovative solution for your daily entry needs. Crafted from stainless steel, this stylish ring features advanced technology compatible with various access control systems, offering both fashion and function. Suit for technology savvy individuals, families, and professionals looking for a seamless way to enhance their security and streamlines their routine. Perfect for use home, in the offices, or at school, this ring simplifies entry into any space requiring frequent, secure access. Embraces modern elegances and cutting edge technology; make the wearable ring an essential part of your daily wear and enjoy the ease it brings to your life. Specifications: Component: Stainless Steel Size:As picture shows Weight:2g Color:Black/White Package Includes: 1Pc Ring note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.