Helio Smart Ring vs Tracking Ring: which is safer?

Tracking Ring is the clear pick. Amazfit Helio Smart Ring carries a failing PFAS grade, and we never recommend buying a failing product.

Amazfit

Helio Smart Ring

PFAS grade

F 40/100

Overall grade

F 28/100

Verdict

Skip

Hazard flags

⚑ 3

Material

titanium alloy with unspecified waterproof coating

Confidence

35%

PossibleWaterproof coating composition (unspecified)

PossibleCoating degradation and microparticle release

PossibleBattery and internal chemical exposure if seal fails

Why this grade

Our pick

Amazon

Tracking Ring

PFAS grade

A 100/100

Overall grade

A 92/100

Verdict

Buy

Hazard flags

⚑ 2

Material

Stainless steel, titanium alloy, sapphire glass

Confidence

72%

PossibleNickel in stainless steel alloy

PossibleSkin irritation from prolonged contact

Why this gradeBuy

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