Helio Smart Ring Health Tracker vs Smart Ring With Heart Rate Blood Oxygen Sleep Monitoring & Sports Modes - Size 8 - Gold: which is safer?
Amazfit Helio Smart Ring Health Tracker is our pick: better on PFAS and on the overall hazard picture.
Our pick
Amazfit
Helio Smart Ring Health Tracker
PFAS grade
Excellent 85/100
Overall grade
Excellent 77/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Titanium alloy case, polymer band
Confidence
35%
PossiblePolymer band composition and residual monomers
PossibleBacterial growth in sealed band-case junction
Smart Ring With Heart Rate Blood Oxygen Sleep Monitoring & Sports Modes - Size 8 - Gold
PFAS grade
Excellent 85/100
Overall grade
Good 73/100
Verdict
Buy
Hazard flags
⚑ 3
Material
Mixed alloy band
Confidence
35%
PossibleNickel leaching from alloy band
PossibleBacterial growth in seals and crevices
PossibleBattery leakage if seal degrades
Where these two actually differ
- We flag Polymer band composition and residual monomers and Bacterial growth in sealed band-case junction on the Amazfit and not on the .
- We flag Nickel leaching from alloy band, Bacterial growth in seals and crevices and Battery leakage if seal degrades on the and not on the Amazfit.
- The Amazfit is Titanium alloy case, polymer band where the is Mixed alloy band, which is most of the difference in these two grades.
- These two are level, close enough that price and fit should decide it rather than our grade.
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More water-resistant smart rings & bands: see the full ranking