T-Rex 3 Pro vs Even R1 Smart Ring: which is safer?
Even R1 Smart Ring is the clear pick. Amazfit T-Rex 3 Pro carries a failing PFAS grade, and we never recommend buying a failing product.
Amazfit
T-Rex 3 Pro
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleWaterproof coating fluorocarbons (PFAS-class)
PossiblePolymer back-cover off-gassing
PossibleFluoroelastomer strap degradation
Our pick
Even Realities
Even R1 Smart Ring
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleBand material variability
PossibleSkin sensitization from sweat pooling
Where these two actually differ
- We flag Waterproof coating fluorocarbons (PFAS-class), Polymer back-cover off-gassing and Fluoroelastomer strap degradation on the Amazfit and not on the Even Realities.
- We flag Band material variability and Skin sensitization from sweat pooling on the Even Realities and not on the Amazfit.
- The Amazfit is Stainless steel case, fluoroelastomer strap, polymer back where the Even Realities is titanium, stainless steel, sapphire crystal, which is most of the difference in these two grades.
- The gap is 45 points, wide enough that this is not a close call, and the Even Realities is the one to buy.
- We are less certain about the Amazfit grade, at 45% confidence against 72%, because it discloses less.
Both products run through the same public rubric, which covers 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