4 days ago
7
At Amazon, get the Amazfit Helio Smart Ring for $95. It's the best deal we've seen for this model. It tracks sleep stages, heart rate, blood oxygen, stress via an EDA sensor, and VO2 Max, all without a subscription fee. The titanium alloy build charges fully in under 90 minutes. Buy Now at Amazon
Features
- Titanium alloy construction
- EDA sensor for stress monitoring
- Heart rate & blood-oxygen tracking
- VO2 Max via Zepp App
- 1.4-hour full charge
- Water-resistant
