Lunar Discovery w/ 1.39" HD Display Turn-by-Turn Navigation vs BeamO 3-in-1 Health MultiScan: which is safer?

Withings BeamO 3-in-1 Health MultiScan is our pick: better on PFAS and on the overall hazard picture.

boAt

Lunar Discovery w/ 1.39" HD Display Turn-by-Turn Navigation

PFAS grade

C 75/100

Overall grade

F 49/100

Verdict

Buy with care

Hazard flags

⚑ 5

Material

Electronic display device, unspecified coatings

Confidence

35%

PossibleDisplay coating (unidentified Teflon-family coating or hardener leachates)

PossibleAdhesive and sealant volatiles (display and casing assembly)

PossibleAluminum/alloy casing corrosion and ion leaching (skin contact)

Why this gradeBuy

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