Smart Ring For Women Men, Couple Birthday Anniversary Gift, Fitness Tracker Ring With 5-7 Days Battery Life, Heart Rate, Blood Oxygen, Sleep Monitor,

[Choose Size & Charge the Ring Before Buy & Using It] Before purchasing your FONADA smart ring, we strongly recommend that you refer to the size chart and carefully measure the circumference of your finger. This will ensure you get the most comfortable wearing experience and easily avoid any unnecessary returns. And please fully charge when you receive the smart ring, so that it can work normally. When wearing it, keep the optical sensor in close contact with the skin of your fingertips to ensure accurate data. Also, remove the smart ring before touching slippery objects on your hand to prevent it from falling off. [Smart Ring Combining Texture and Comfort]Narrower design balances skin-friendly comfort with premium aesthetics, elevating everyday wearability. [Professional Sleep Monitoring] Equipped with 24-hour sleep algorithms to accurately track sleep cycles and deeply analyze sleep quality. [Portable Charging]Supports wireless charging-simply place to charge, freeing you from cable constraints for effortless use. [Enhanced Smart Ring Algorithms]AI analyzes health data and optimizes algorithm systems for more reliable monitoring and scientific health tracking. [Hardware-Powered Smart Ring] Dual PD sensors boost interference resistance, expand compatibility across scenarios, and deliver significantly improved battery life. [A Healthy Gift for Your Loved Ones] This smart ring is more than just a wearable smart ring. Besides checking your own health, it also serves as a constant reminder to keep an eye on the health of your family and friends. Whether it's a birthday, Valentine's Day, Mother's Day, Father's Day, Thanksgiving, Christmas, or New Year's, it's the perfect gift for family or friends. [What's In The Box]Smart Ring*1,Charging Case*1,Charging Cable*1, User Manual*1.[Gold model: color = as shown. Ignore box label]#13(Circumference--70.4mm),#12(Circumference--67.8mm),#10(Circumference--62.8mm),#14(Circumference--73mm),#9(Circumference--60mm),#11(Circumference--65.4mm),#7(Circumference--55mm  ),#8(Circumference--57.5mm)