PFAS score
Omega · Waterproof Sports Watches
Omega Seamaster Diver 300m Co-Axial Chronometer Watch
Lower concern from material itself, but waterproofing chemistry is undisclosed, typical for luxury watches.
The Seamaster's stainless steel case and sapphire crystal are inherently lower-PFAS materials. However, Omega does not publicly disclose the water-resistance treatment chemistry used to achieve 300m depth rating, such coatings often employ water-repellent coating agents that may contain PFAS.
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Material
Stainless steel case, sapphire crystal, rubber strap; waterproof treatment on case/seals
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.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 62% 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 Sports Watches
Casio
Men's Black Watch
Stainless steel case, resin band
Lower concern; standard watch materials carry minimal known PFAS risk.
✓Bare metal or glass, no coating at all
Seiko
Men's 5 Sports Automatic Stainless Steel Watch
Stainless steel case, acrylic crystal, leather/rubber strap
Lower PFAS concern, classic watch materials carry minimal risk, but Seiko makes no public PFAS commitments.
✓Bare metal or glass, no coating at all
Seiko
Men's 5 Sports Automatic Watch
Stainless steel case, hardened crystal, synthetic rubber/elastomer strap
Lower PFAS concern; mechanical watch with standard materials, no known waterproofing coatings that typically contain PFAS.
✓Bare metal or glass, no coating at all
More waterproof sports watches 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.