【THE INNOVATIVE SMART RING】: Our smart ring is equipped with NFC wireless charging, ensuring that no metal touches your fingers at all. With 5-7 days of battery life and a portable charging case, it's as convenient as carrying your Bluetooth earbuds. Extend POBOVi's runtime up to 20 days through NFC wireless charging, all without the hassle of cables.,【24/7 HEALTH MONITORING】: Our Smart Ring provides continuous monitoring of key body signals, including heart rate variability, blood oxygen, stress, menstruation tracking, steps, activities, energy source, and sleep quality. Stay informed and take control of your health management easily.,【THE COMFORTABLE RING】: With a thickness of less than 3mm and weight is only 2.7g, without bumps and metal charging ports (no rusting), and crafted from skin-friendly materials with IP68 waterproof rating, it provides the comfortable wearing experience worldwide.,【NO SUBSCRIPTION FOR LIFE】: Access your smart ring health tracker data easily through the POBOVi app, without any additional costs. Compatible with iOS & Android. As you continue using the POBOVi Smart Ring, expect personalized and accurate service feedback tailored to your needs.,【ULTRA-LIGHTWEIGHT DESIGN】: Crafted from aerospace-grade titanium, the POBOVi Smart Ring weighs just one-tenth of a typical smart wristband. Enjoy all-day comfort and seamless health monitoring with this durable yet feather-light accessory.