Your Cart

O2Ring sleep monitor is a quick and precise way to check pulse rates and blood oxygen saturation levels. Wear the ring, it will automatically start to track your overnight blood oxygen saturation, heart rate, and body movements continuously. And in the next morning, you can check your oxygen saturation trend through our free APP easily.


  • Continuously Monitor: Our sleep oxygen monitor allows you to store overnight and continuous blood oxygen saturation levels & heart rate during sleep or other occasions, rechargeable battery lasts 12-16 Hours. FDA registered.
  • Silent Alarm: Don’t worry about skipping any hypoxic events or abnormal heart rates. The built-in alarm will vibrate and remind you of low oxygen levels or irregular heart rates happen. Noise-free, only wake you when needed.
  • Comfortable Ring Oxygen Monitor: No more oppression, the soft silicone material makes it comfortable to wear overnight.
  • Record Your Data: Sync real-time data with App and Bluetooth. The built-in memory can store 4 groups of 10 hours of data on the device.
  • Professional App & Pc Report: Free APP & PC software provides graphic sleep reports and trends of data. Our app provides users with detailed analysis and records of overnight blood oxygen levels, heart rates, and body movements. It records in 4-second intervals.


  • Brand: Wellue
  • Material: Silicone
  • Color: Gray
  • Package Weight: 0.03 Lb
  • Package Dimensions (LxWxH): 1.50 x 1.20 x 1.50 Inches
  • Oxygen Level Range: 70%-99%
  • Pulse Rate Range: 30 to 250 bpm