Gen 3 Sport Smartwatch with Q Control vs BeamO 3-in-1 Health MultiScan: which is safer?

Withings BeamO 3-in-1 Health MultiScan is the clear pick. Fossil Gen 3 Sport Smartwatch with Q Control carries a failing PFAS grade, and we never recommend buying a failing product.

Fossil

Gen 3 Sport Smartwatch with Q Control

PFAS grade

F 40/100

Overall grade

F 14/100

Verdict

Skip

Hazard flags

⚑ 5

Material

Stainless steel case, plastic bands, elastomer seals

Confidence

35%

PossibleElastomer off-gassing and degradation

PossibleSkin irritation from band materials

ReportedUnknown waterproofing chemistry (likely PFAS)

Why this grade

Our pick

Withings

BeamO 3-in-1 Health MultiScan

PFAS grade

A 100/100

Overall grade

A 92/100

Verdict

Buy

Hazard flags

⚑ 2

Material

Medical-grade stainless steel, plastic housing, medical sensors

Confidence

72%

PossibleStainless steel corrosion and nickel release

PossibleBacterial growth on sensor surfaces

Why this gradeBuy

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: see the full ranking