Garmin quatix 8 AMOLED Marine GPS Smartwatch vs BeamO 3-in-1 Health MultiScan: which is safer?

Withings BeamO 3-in-1 Health MultiScan is the clear pick. Garmin quatix 8 AMOLED Marine GPS Smartwatch carries a failing PFAS grade, and we never recommend buying a failing product.

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Garmin quatix 8 AMOLED Marine GPS Smartwatch

PFAS grade

F 40/100

Overall grade

F 14/100

Verdict

Skip

Hazard flags

⚑ 3

Material

Stainless steel case, silicone/elastomer band, waterproof coating (unspecified)

Confidence

45%

LikelyWaterproof coating (unspecified chemistry, presumed PFAS-based)

PossibleSilicone/elastomer band degradation and outgassing

PossibleNickel release from stainless steel (skin sensitivity)

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