R20 CeramicandResin Sleep Heart Rate Health Monitoring Smart Ring,Magnetic Cable Charging - Black or Size 13 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 Capacity: 20mAh Charging Method: Magnetic Charging 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 and Resin Package included: 1 x Smart Ring 1 x Charging Cable 1 x English User Manual