Helio Strap Fitness Tracker vs Water Resistant Watch Model 8R500 - Men: which is safer?
TomTom Water Resistant Watch Model 8R500 - Men is our pick: better on PFAS and on the overall hazard picture.
Amazfit
Helio Strap Fitness Tracker
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleSkin sensitization or contact dermatitis from elastomer additives
PossibleNickel or metal leaching from buckles or hardware
PossibleDegradation or stickiness over extended use
Our pick
TomTom
Water Resistant Watch Model 8R500 - Men
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossiblePolymer case and band degradation
PossibleBacterial or mold growth in seals and band
Where these two actually differ
- We flag Skin sensitization or contact dermatitis from elastomer additives, Nickel or metal leaching from buckles or hardware, Degradation or stickiness over extended use and Bacterial or mold growth under the strap on the Amazfit and not on the TomTom.
- We flag Polymer case and band degradation and Bacterial or mold growth in seals and band on the TomTom and not on the Amazfit.
- The Amazfit is Elastomer strap, likely silicone or rubber where the TomTom is On watch case and 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 waterproof fitness trackers & cases: see the full ranking