Unite Waterproof Fitness Sports Watch vs Classic Plus Stainless Steel Magnetic Closure WatchBand for Apple Watch: which is safer?
Polar Unite Waterproof Fitness Sports Watch is our pick, better on PFAS and on the overall hazard picture.
Our pick
Polar
Unite Waterproof Fitness Sports Watch
PFAS grade
Excellent 85/100
Overall grade
Good 73/100
Verdict
Buy
Hazard flags
⚑ 3
Material
Mixed polymers, elastomers, stainless steel
Confidence
35%
PossibleElastomer degradation and skin contact
PossibleBacterial or mold growth in seal/crevices
PossibleNickel allergy from stainless steel contact
X-Doria
Classic Plus Stainless Steel Magnetic Closure WatchBand for Apple Watch
PFAS grade
Excellent 85/100
Overall grade
Good 59/100
Verdict
Skip
Hazard flags
⚑ 1
Material
Stainless steel, magnetic closure
Confidence
82%
PossibleNickel leaching from stainless steel
Where these two actually differ
- We flag Elastomer degradation and skin contact, Bacterial or mold growth in seal/crevices and Nickel allergy from stainless steel contact on the Polar and not on the X-Doria.
- We flag Nickel leaching from stainless steel on the X-Doria and not on the Polar.
- The Polar is Mixed polymers, elastomers, stainless steel where the X-Doria is Stainless steel, magnetic closure, 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.
- We are less certain about the Polar grade, at 35% confidence against 82%, 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 waterproof fitness trackers & cases, see the full ranking