⭐【Size Before You Buy】The KNGAD Smart Ring follows U.S. ring sizing standards. If you already know your U.S. ring size, you can order the health tracker ring in that same size. If you don’t know your U.S. ring size, we strongly recommend checking the U.S. ring size guide, measuring your finger circumference, and using that to determine your perfect fit.

⭐【Sleep Tracking Ring】Wear this smart health ring to bed—you won’t even feel it on your finger. Thanks to its ultra-thin design, tracking your sleep has never been easier. Just put it on before bedtime, and it’ll automatically and continuously monitor your sleep, including: Total sleep time, Sleep quality (deep sleep, light sleep, and awake periods). Check your 30-day sleep history in the app to gain insights into your sleep patterns and build healthier sleep habits over time.

⭐【Health Tracker Ring】This smart health ring features a high-precision advanced chip that continuously monitors your heart rate, HRV, and blood oxygen levels 24/7, giving you deeper insights into your health.You can also view your 30-day health history in the app to track trends and better understand your wellness over time.

⭐【Fitness Ring】This fit ring automatically tracks your steps, calories burned, and distance throughout the day. It features multiple sport modes, including: Running,Cycling, Jump, rope, Walking, Hiking, Yoga, Dancing, Golf and more. When you activate these modes, the app provides detailed workout data like: Exercise route, Duration, Steps, Heart rate, Speed, Calories burned, Distance. This gives you more effective exercise guidance to optimize your workouts.

⭐【NO Subscription Fees】Download the app for free and enjoy lifetime access at no cost—no hidden fees, no surprises. Just unlimited access to your smart ring's features, guaranteed.

⭐【Long Battery Life】Full charge the ring health tracker in just 2 hours, lasts 3-5 days of normal use. Includes portable charging case (15 full charges the smart ring) , which extends usage to 60 days. Simply recharge the case when needed - perfect for continuous health monitoring. Charge your health rings effortlessly using the magnetic USB cable or the charging case.

⭐【Wide Compatibility】The ring tracker works with iOS 9.0 and higher, Android 5.0 and higher version mobile phones. This smart ring for women men is a perfect gift for anyone - whether for your husband, wife, parents, siblings, or friends.