About The Product

• Brand: COLMI

• Model: R02

• Category: Fitness Ring / Smart Ring

• Certification: CE, FCC (meets international safety and electronic standards)

• Origin: Mainland China

• Weight: 4.4g (very lightweight)

• Material: Steel case – durable and sleek

🔋 Battery

• Battery Capacity: 17mAh

• Expected Use Time: Typically a few days depending on usage (not explicitly listed)

• Charging Method: Not specified, but likely magnetic dock or contact charger

💧 Durability

• Waterproof Grade: 5ATM – safe for swimming, showering, and daily use (up to 50 meters)

📊 Activity & Health Tracking

• Tracked Activities:

  • Steps

  • Distance

  • Calories Burned

• Health Metrics:

  • Heart Rate Monitoring

  • Sleep Tracking

  • Blood Oxygen (SpO₂) Monitoring

  • Stress Monitoring

🚫 Limitations

• Display Screen: No – all data is likely accessed through a companion app

• NFC: Not supported

• Smart Features: No touch screen, GPS, or Bluetooth audio functions mentioned

✅ Summary

The COLMI R02 is a lightweight, screenless fitness smart ring focused on core health metrics like heart rate, SpO₂, and stress. With 5ATM waterproofing and steel construction, it's well-suited for active users who prefer discreet, screenless health tracking. It’s ideal if you want minimalism with essential metrics.