Smart Ring: The vital health ring can monitor heart rate, scheduled oxygen saturation, daily exercise, sleep monitoring and analysis in real time 24 hours a day to ensure you are always aware of your health condition. It also accurately records your steps, distance and calories burned to help you achieve a healthier lifestyle Intelligent Sleep and Activity Tracking: The Sleep ring accurately records your sleep quality and daily activity levels, empowering you to optimize your lifestyle and improve overall health for better rest and recovery NFC Ring: Built-in erasable NFC chip, NFC ring is blank, Users can download some free NFC reader APP and then set the function according to their needs, It can be used as NFC business card, open smart car lock, open smart lock, send link, fast connect WIFI/Bluetooth, etc. It is suitable for NFC devices, NFC-enabled smartphone Remote Photography: The wearable ring bracelet has a shake-and-take function, just shake your finger twice quickly and the shutter button will be pressed, you can easily capture beautiful moments, allowing you to effortlessly record life moments IP68 Waterproof & Ring Protector: The Waterproof Fitness Ring is designed to meet IP68 waterproof standards. Whether you're washing your hands, showering or swimming, there's no need to remove your ring. The ring protector also protects your ring in everyday life, at the gym, and during outdoor sports. Avoid knocks and bumps Long Battery Life: After Sleep Tracker Ring is fully charged, it can be used continuously for up to 5-7 days, Paired with free 300mAh mini charging case, Fitness Tracker Ring can provide 10-15 cycles of charging for the ring, and there is no need to worry about electricity frequently Family Care: The health tracker ring app supports adding family members as friends. You can use the app to analyze your family's measurement data at any time, including exercise, blood oxygen, blood pressure, sleep and heart rate data, You can always provide care for your family when you need it This is a NFC smart ring, The vital health ring can be 24 hours real-time monitoring of heart rate, scheduled oxygen saturation, daily exercise, sleep monitoring and analysis, and remote photo, family care and other functions, no APP subscription fee, IP68 waterproof ceramic smart ring, fashionable and beautiful, the set is equipped with a charging cable, charging case, the ring silicone protective cover