Smart Ring Product Information Outer material: Titanium Alloy Product Weight:6.8 gram Battery Usage Time: 4 days to 6 days, depending on usage frequency Charging Method: Magnetic charging with chargeing case Charging Time: 0.5 hour Connection Method: Bluetooth 5.1 Software Compatibility: Updated through software application Waterproof Rating: IP68/10ATM Compatible System Versions: Compatible with Android 6.0 and newer versions. Compatible System Versions: Compatible with iOS 11.0 and newer versions. Supported applications Google Fit,WeChat Sports,Apple Health Sleep tracking: Automatically records from 10:00 PM to 8:00 AM. Heart rate monitoring: Automatically checks every half hour or manually measures via the application. Blood oxygen saturation: Measured manually through the application. Stress testing: Measured manually through the application. HRV: Automatically checks every half hour or manually measures via the application.

First choice for holiday gifts: Christmas, Easter, Valentine's Day, this smart ring can be a great holiday gift for family and friends. New Choice for Engagement Ring: Smart Ring with Modern and Fashionable Innovative Design, Can Be Used as Engagement and Wedding Ring. Unlike smart watches, smart rings are smaller and lighter, making them more suitable for daily attire. They have a waterproof level of 4 and are suitable for daily use. Comprehensive record of health status: continuously record physical condition 24 hours a day, synchronize mobile phone display data, and help oneself analyze physical health status. It is important in monitoring your movement,sleep duration,Hearbeats,blood oxygen etc. and in knowing the correct actions to take to improve your health and save your life.Through a combination of smart App and beautiful hardware, the smart Ring offers this deeper truth in the state of your body, and it looks stylish to boot! Say goodbye to bulky smartwatches and bluetooth bracelets, and say hello to deeper health insights with this fashionable smart ring.