Swatch · Waterproof Smartwatches & Fitness Trackers
Swatch Scubaqua Sea Nettle Quartz Watch
Waterproof watch likely uses PFAS-based sealants. No brand disclosure.
Swatch makes affordable quartz watches with waterproofing, typically achieved via PFAS-based treatments or coatings. Swatch provides no public PFAS disclosure for this model or product line.
The safe swap
Swatch
Swatch Chrono 42 Quartz Watch
85/100 safety
Same rubric that flunked this product. The swap earned its B.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Resin case, mineral glass, metal components, waterproof sealing
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Waterproof / stain-resistant treatment
water-repellent coating treatments have historically used PFAS.
Category baseline
other is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
The Swatch Scubaqua case is injection-molded resin (likely polycarbonate or acrylic blend), paired with mineral glass and metal components (probably stainless steel or plated brass). Resin cases are inherently low-leach compared to ceramics or coatings because they don't contact food or lips. The waterproof seal itself likely contains Teflon-family coating-based sealants (PFAS compounds) to achieve water resistance, which is standard in the dive-watch category but not accessible to skin or ingestion during normal wear.
The brand's record and disclosure
Swatch Group has not published detailed PFAS policy or chemical disclosure statements for watch components. The brand does not appear on major sustainable watchmaker transparency lists, and no recalls or safety violations specific to Scubaqua models are on record. Swatch's consumer communications focus on design and durability rather than material safety certifications, which is typical for fashion-watch manufacturers but offers limited assurance on non-PFAS hazard mitigation.
How it compares in its category
Watches occupy a middle ground: unlike cookware, they involve zero food contact; unlike textiles, no skin permeation risk. A resin sports watch like the Scubaqua has fewer hazard pathways than ceramic-dial models (which can contain lead in pigments) or leather straps (which may contain formaldehyde or azo dyes). Most comparable quartz watches in this price tier use identical resin/glass/metal construction with similar waterproof sealant chemistry.
If you buy it
Avoid prolonged exposure to strong solvents (acetone, alcohol-based cleaners) which can degrade resin. Do not attempt to open the case yourself; any seal breach voids water resistance and exposes internal components. Clean with lukewarm soapy water and a soft cloth. Metal components may corrode if exposed to chlorine or saltwater without rinsing; rinse after swimming. Battery replacement and seal maintenance should be done by an authorized service center every 1-2 years if water resistance is a functional requirement.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Resin degradation and microplastic shedding
Polycarbonate/acrylic resin cases can develop micro-cracks or scratches under UV and physical stress over 5-10 years. No evidence of bulk microplastic release during normal wear, but damaged cases theoretically shed particles. This is not a recognized safety concern in watchmaking, but resin durability varies by injection molding quality.
Metal component corrosion and ion leaching
Case screws and watch back are likely stainless steel or nickel-plated brass. Nickel can sensitize skin in individuals with dermatitis if the back rubs directly on wrist for 8+ hours daily. Swatch does not disclose plating composition; no specific recalls exist for this model.
Mineral glass clarity and lead content
Mineral glass does not contain lead by standard definition (unlike some costume jewelry). Swatch sources mineral glass from established suppliers; no contamination reports are on record for Scubaqua models.
Waterproof seal integrity and PFAS stability
Teflon-family coating sealants (PFAS-based) are industry standard for dive-watch waterproofing and are stable when sealed inside the case. Risk of leaching is near-zero during normal wear because seals do not contact skin or fluids. However, no brand transparency exists on whether alternative (non-PFAS) sealants have been evaluated.
Battery cadmium or mercury content
Swatch quartz watches use modern silver-oxide button cells (SR626, SR927) which do not contain mercury or cadmium in most markets. European and US-sold units comply with battery regulations. However, Swatch does not explicitly confirm battery specifications on product labels.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 45% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Waterproof Smartwatches & Fitness Trackers
Swatch
Chrono 42 Quartz Watch
Stainless steel case, mineral/plastic crystal, standard watch components
Lower concern. Standard watch materials pose minimal PFAS risk.
⚠Brand says nothing about PFAS
Swatch
SEA WASP
Plastic/resin watch case and strap
Typical consumer watch, no known PFAS risk signal identified
⚠Brand says nothing about PFAS
Swatch
Neon Seppia Big Bold Chrono Quartz Watch
Stainless steel case, plastic/resin band, mineral or acrylic crystal
Lower concern. Standard watch materials typically lack intentional PFAS use.
⚠Brand says nothing about PFAS
More waterproof smartwatches & fitness trackers 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.