Step into the future of access control with this sophisticated RFID rewritable ring. This dual-frequency smart ring operates on both 125KHz T5577 and 13.56MHz CUID frequencies, making it versatile for various access systems. The sleek black ceramic design offers both style and durability, perfect for daily wear. Available in US standard size 6-13, this ring serves as a convenient alternative to traditional key cards and can be worn comfortably by both men and women. The ring's cloning capability allows it to work with compatible access control systems, eliminating the need to carry multiple cards. The ceramic construction ensures long-lasting performance while maintaining an elegant appearance that seamlessly blends with any attire. This smart ring represents the perfect fusion of technology and fashion, offering a practical solution for modern access needs.