Getting Started Introduction to Belun® Ring Choose the correct Ring Arm Change the Ring Arm Charge your Belun® Ring for the first time Download BelunSleep Sign Up a New Account Pair your Belun® Ring with BelunSleep Using Belun® Ring Get to know your Belun® Ring Parts Status Lights Battery Charging Power On/Off Reset How to use Belun® Ring for sleep monitoring? Caring Cleaning Use Environment Storage Environment Precautions & Specification Precautions for Use Specification Last updated: Jan 3, 2022 Storage Environment Temperature: -10°C – +60°C Relative Humidity: ≤95% Atmospheric Pressure: 500hPa – 1060hPa