Juice Pack Case for iPhone 17 Pro Max vs Scanwatch HWA09 Hybrid Smartwatch: which is safer?
mophie Juice Pack Case for iPhone 17 Pro Max is our pick: better on PFAS and on the overall hazard picture.
Our pick
Mophie
Juice Pack Case for iPhone 17 Pro Max
PFAS grade
Excellent 85/100
Overall grade
Excellent 81/100
Verdict
Buy
Hazard flags
⚑ 1
Material
Plastic housing
Confidence
45%
PossibleMicroplastics from case degradation
Withings
Scanwatch HWA09 Hybrid Smartwatch
PFAS grade
Excellent 85/100
Overall grade
Good 55/100
Verdict
Skip
Hazard flags
⚑ 4
Material
stainless steel, sapphire crystal, elastomer band
Confidence
45%
PossibleElastomer band degradation and additive leaching
PossibleBacterial and fungal growth on band
LikelyWaterproofing chemistry (PFAS surrogate)
Where these two actually differ
- We flag Microplastics from case degradation on the Mophie and not on the Withings.
- We flag Elastomer band degradation and additive leaching, Bacterial and fungal growth on band, Waterproofing chemistry (PFAS surrogate) and Stainless steel nickel content and skin sensitivity on the Withings and not on the Mophie.
- The Mophie is Plastic housing where the Withings is stainless steel, sapphire crystal, elastomer 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 smartphone cases: see the full ranking