• Track heart rate, blood oxygen (SpO2), HRV, and sleep quality in real time for better wellness insights. This smart ring health tracker helps you optimize recovery, stress levels, and overall health.
• Monitor steps, calories burned, and workout intensity across 128+ activities (running, swimming, yoga, etc.). The fitness tracker ring provides accurate data to enhance performance.
• Wear it while swimming, showering, or sweating—no damage worries. Use gesture control to take photos hands-free, making it a smart ring for men and women who love convenience.
• Get period predictions and ovulation alerts for better planning. A must-have health ring for women supporting hormonal balance and fitness routines.
• Unlike other brands, JIANVNUI smart ring has no hidden fees—enjoy all features forever without paying for an app,Suitable for Android and iOS.

At Nestifys, your satisfaction is our top priority. We want you to feel confident and delighted with every purchase of our bedding products. However, if for any reason you are not completely satisfied, we offer a hassle-free return and refund process within30 days of your order’s delivery date designed with your convenience in mind.

At Nestifys, we strive to ensure that our customers are fully supported throughout the lifespan of their purchase. If your product experiences an issue that may be covered under a manufacturer’s limited warranty, we’re here to help guide you through the process.