Wellue O2Ring, several people at once

The O2Ring is a ring-style oximeter that's comfortable to wear for long stretches, which makes it a good fit for a group session: a breathwork class, a training block at altitude, a long day on the hill. MOMS connects to each ring over Bluetooth using the Viatom / Wellue protocol and gives every wearer their own named tile.

• Live SpO₂ and heart rate for up to eight sensors on one screen
• A red flash and repeating alarm when a reading drops below your threshold, with a time-limited mute
• Its own alarm for a sensor that goes silent for five seconds, and a yellow tile when a finger slips out
• Session recording to plain CSV files on your device, with a review screen of charts, dips and events

1. Charge the rings and put them on.
2. Close the Wellue app on any phone that's connected to a ring. Most rings take one Bluetooth connection at a time.
3. Open MOMS. Each ring appears as a tile within a few seconds — no pairing in Bluetooth settings.
4. Tap a tile to name it after its wearer, and set your alarm threshold (80–95%).

Want to see it first? Demo mode simulates eight sensors, so you can try every screen before connecting a real one.

The Wellue O2Ring doesn't have to be the only sensor on the screen. MOMS also reads:

• BerryMed BM1000 (BerryMed BCI protocol)
• Checkme O2 Max (O2M (Wellue / Lepu) protocol)

More on watching a group: several pulse oximeters on one screen.

Wellue O2Ring is a product of its manufacturer. Elevated Self is not affiliated with or endorsed by them; the name is used only to say which sensors MOMS works with.