1. The combination of technology and art. The smart ring features builtin NFC functionality, eliminating the need for an access card—simply open doors directly with the ring. Crafted from ceramic and stainless steel, the smart ring boasts a sleek, shiny, and textured appearance. During workouts, you'll barely notice its presence, enhancing your athletic performance. 2. Smart ring with blood pressure monitoring. This ring tracks health metrics like heart rate, blood pressure, and blood oxygen levels. Once connected via Bluetooth, you can view daily health data in the app or monitor realtime heart rate, blood pressure, and blood oxygen manually. Its sleep monitoring function records sleep duration, including wake time, deep sleep, and light sleep, and analyzes sleep quality. 3. Fitness ring with multiple sports modes. The ultralight fitness tracker ring is comfortable to wear without feeling cumbersome. The app supports various exercise modes, including running, cycling, skipping rope, brisk walking, hiking, yoga, golf, dancing, and more. The tracking ring monitors workout data such as steps, calories burned, and distance. 4. IP68 waterproof smart ring. This display fitness tracker meets daily waterproof needs, handling water splashes and even cold showers. Ideal for everyday use, but avoid exposure to extremely temperatures. Package includes: smart ring x 1, instruction manual x 1, charging cable x 1.