Water Resistant Watch Model 8R500 - Men vs Smart Watch Fitness Tracker, 1.47'' TFT Display, 21-Day Battery Life, 50 Fitness Modes, 50m Water Resistant, Smar: which is safer?
Xiaomi Smart Watch Fitness Tracker, 1.47'' TFT Display, 21-Day Battery Life, 50 Fitness Modes, 50m Water Resistant, Smar is our pick: better on PFAS and on the overall hazard picture.
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
Our pick
Xiaomi
Smart Watch Fitness Tracker, 1.47'' TFT Display, 21-Day Battery Life, 50 Fitness Modes, 50m Water Resistant, Smar
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleWater resistance seal failure and bacterial/mold growth
Where these two actually differ
- We flag Polymer case and band degradation and Bacterial or mold growth in seals and band on the TomTom and not on the Xiaomi.
- We flag Water resistance seal failure and bacterial/mold growth on the Xiaomi and not on the TomTom.
- The TomTom is On watch case and band where the Xiaomi is Unspecified polymers, likely silicone and stainless steel band; 50m, 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