Swatch · Waterproof Smartphone Cases
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 with PFAS-based treatments or coatings. Swatch won't disclose PFAS practices for this model or product line.
The better-graded swap
Realme
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85/100 safety
Same rubric that flunked this product. The swap earned Excellent.
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Material
Resin case, mineral glass, metal components, waterproof sealing
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What Swatch Scubaqua Sea Nettle Quartz Watch is made of, ingredients and materials
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.
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.
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.
PFAS
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.
Source, ATSDR ↗What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
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.
Lead
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.
Source, ATSDR ↗Cadmium
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.
Source, ATSDR ↗The full breakdown
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.
What we don’t know
- Basis
- Model estimate, 45% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Swatch 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.