Powerful Waterproof Smart Ring Activity Tracker Ring: This smart ring boasts a 5ATM waterproof rating, making it suitable for diving and snorkeling at depths over 50 meters. Whether you're swimming at the beach or showering, wear it with confidence without worrying about water damage. Multiple Sports Modes Smart Ring for Men Women: The fitness tracker activity tracker ring effortlessly tracks all your activities, whether walking, running, cycling, or swimming. Utilize phone GPS to obtain real-time exercise data, helping you set and achieve your fitness goals. Heart Rate & Blood Oxygen & Sleep Monitoring: Initiate all-day dynamic heart rate tests through the app, providing heart rate trends and data analysis. Smart ring for men women also supports blood oxygen saturation monitoring, and sleep monitoring so you can stay informed about your health, perfect for various fitness needs. Extended Battery Life Bluetooth Smart Ring: Equipped with a 17.5mAh capacity polymer battery, this ring can standby for about 60 days with a full charging case and offers up to 10 days of actual usage. Enjoy enhanced battery performance without any worries. Snap Instantly with a Wave of Your Hand: The innovative smart ring design allows you to easily take photos anytime, anywhere. With remote camera control, become a professional photographer and effortlessly capture beautiful moments, stylish smart ring elevating your selfie game; Smart ring for mobile app control and calls and messages. Smart Ring Notes: When connecting the smart ring via WiFi search, please make sure to operate within the JRing app instead of searching for the device in your phone's Bluetooth settings. To get started, please download the JRing app first and follow the in-app instructions for connection. Item Name: smart ring for health monitoring Advanced smart ring for sleep and fitness Product weight: About4.5g Packing size: 8 x 5 x 4cm Battery Type: Polymer battery Working temperature: 0-50°C Charging method: Magnetic charging Compability: fitness smart ring for Android 5.0 or above, Applle lOS 10.0 or above, smart ring for mobile app control Functions: Stylish smart ring, Heart Rate/Blood Pressure/Oxygen/Sport modes Specifications: Size #8: Inner diameter 18.2mm Size #9: Inner diameter 19.0mm Size #10: Inner diameter 19.9mm Size #11: Inner diameter 20.7mm (Please choose the size based on the inner circumference of your fingers.) Ky features: men's ring men ring health rings tracking ring for women ring watch sleep rings for women step tracker ring fitness rings for men fit ring gold smart ring activity tracker bluetooth ring finger ring size