R20 Ceramic+Resin Sleep Heart Rate Health Monitoring Smart Ring with Charging Case - Black/Size 8 •【Real-time health monitoring】Real-time monitoring of heart rate,blood oxygen,and blood pressure •【Care for family】Understand the health information of family members. Add family members as friends and you can view their health information •【IP68 waterproof】IP68 level waterproof effect. It's waterproof in daily life and suitable for swimming •【Sports monitoring】A variety of sports modes. Record information such as exercise heart rate,speed and time in real-time •【Remote control for taking photos】Use the APP to enter the remote control for taking photos function and shake the ring to remotely control the phone to take photos •Specifications: •Ring Size Internal Diameter (mm): 7 17.3mm,8 18.1mm,9 18.9mm,10 19.8mm,11 20.6mm,12 21.4mm,13 22.2mm •Weight: Around 5g •Major Function: Steps,distance,calorie calculation,heart rate,blood pressure,blood oxygen saturation,sleep tracking,care (add friends),smart photo taking •Chipset: AC6323 •APP: Smart Health •Compatible System: Android 5.1 or Above,iOS 8.0 or Above •RAM Memory: 4Mb •Type: Not Supported •Screen Size: Not Supported •Resolution Ratio: Not Supported •Encoder: Not Supported •Touch Type: Not Supported •BT: 5.0 Bluetooth Chip •BT Call: Not Supported •WIFI: Not Supported •NFC: Support access control NFC (access card); Does not support NFC payment •Sensor: SC7A20H •Gyroscope: Not Supported •Heart Rate: Goodix GH3018 •GPS: Not Supported •Battery Type: Polymer Lithium-ion •Ring Battery Capacity: 20mAh •Charging Case Battery Capacity: 200mAh •Charging Method: Charging Case •Smart Health: Steps,distance,calories,exercise data recording,heart rate monitoring,blood pressure,blood oxygen monitoring,sleep health tracking •Multiple Exercise Modes: Running,cycling,skipping,walking,mountaineering,yoga,golf,dancing •Supported Languages: English,Simplified Chinese,Traditional Chinese,Russian,Ukrainian,German,French,Italian,Spanish,Portuguese,Polish,Greek,Romanian,Hungarian,Czech,Slovak,Irish,Croatian,Swedish,Danish,Finnish,Arabic,Farsi,Norwegian,Japanese,Korean,Thai,Vietnamese •Waterproof Level: IP68 •Charging Time: Around 1-2 Hours •Life Time: 3-5 Days (Usage),7-10 Days (Standby) •Appearance Material: Ceramic + Resin Package included: •1 x Smart Ring •1 x Charging Cable •1 x Charging Case •1 x English User Manual