Withings · Waterproof Smartphone Cases
Withings ScanWatch Light Hybrid Smart Watch
No coating described, and no PFAS statement from the brand.
The product information we reviewed describes stainless steel case, polymer straps, electronic components, with no water-repellent coating named. Water resistance on products like this usually comes from the material and its seals rather than a surface treatment. The brand has published no PFAS statement for it.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Stainless steel case, polymer straps, electronic components
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Polymer strap degradation and skin contact
Repeated sweat exposure and UV light can degrade elastomer straps over time, potentially releasing oligomers or adhesive residues. No accelerated aging or migration data is published for Withings' specific strap formulations; risk is not established but typical for wearables.
Adhesive or glue residue on strap interfaces
The junction between strap and case may contain adhesives to reinforce the seal. If strap attachment fails, residual adhesive could contact skin; no specific adhesive composition or safety data is disclosed by the brand.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Nickel leaching from stainless steel case
High-grade stainless steel (typically 316L in watches) has negligible nickel release under normal wear. No recalls or complaints regarding nickel sensitivity from ScanWatch models have been documented.
Battery leakage or electrolyte exposure
The sealed battery compartment isolates the electrolyte from skin contact. Only if the watch is physically damaged would internal components become accessible; this is a mechanical risk, not a chemical one inherent to the product design.
Electronic component off-gassing
Sealed electronics (PCBs, display, sensor modules) do not off-gas volatile organic compounds into the user's breathing space or onto skin. No formaldehyde resins, flame retardants, or solvents are known to be used in quantities that would pose inhalation risk.
The full breakdown
What it's made of and why it matters
The ScanWatch Light uses a stainless steel case, which is chemically inert and does not leach metals or require surface coatings for durability. Polymer straps (material type not publicly specified in detail) contact skin; if silicone-based, leaching risk is minimal; if TPU or PVC, risk remains low under normal skin-contact conditions. The watch contains sealed electronic components (display, battery, sensors); these are isolated from the user and present no ingestion or dermal hazard pathways. No ceramic enamel, glaze, or decorative coatings have been described for this model.
The brand's record and disclosure
Withings has not published a formal PFAS reduction statement or sustainability certifications visible in standard consumer disclosures. The brand has not faced major safety recalls related to chemical hazards in wearables. As a health-focused electronics company, Withings markets safety features (water resistance, biocompatibility for skin sensors) but does not highlight material transparency beyond IP ratings. No third-party safety certifications (e.g., medical device compliance, skin allergen testing) are prominently documented for this consumer model.
How it compares in its category
The ScanWatch Light is a hybrid smartwatch, not a waterproof smartphone case; the category context appears misaligned. Compared to typical hybrid watches, stainless steel construction is standard and presents lower concern than plated or coated alternatives, which can degrade and expose base metals. Polymer straps are common; quality varies by brand, but Withings' use of stable elastomers is consistent with mainstream wearables. No published data suggests this watch poses higher chemical hazards than competitors in its price and design tier.
If you buy it
Clean the strap regularly with mild soap and water to prevent skin irritation from sweat or strap degradation; discontinue use if redness or itching develops. The 50 m water resistance rating is from sealed construction, not a protective coating, so avoid prolonged submersion or hot water. Replace the strap if it shows visible cracking, discoloration, or sticky residue. Store the watch in a dry environment when not in use to protect the electronic seals; avoid extreme heat (above 60°C) which may degrade polymer components.
What we don’t know
- Basis
- Model estimate, 35% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Withings has made none
Formulations change between production runs, so check the current label. How we grade.
More waterproof smartphone cases grades
How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.