Meet the Wellue Checkme O2 Max: a smart wearable device that tracks and records your oxygen levels and heart rates. It has built-in memory to work independently but also connects to your smartphone. You get alerts when abnormal readings are detected.
The Checkme O2 Max has a soft silicone sensor, so you can wear it all night long comfortably. It creates shareable sleep reports. You can change vibration intensity and other settings on your phone.