TomTom · Waterproof Smartwatches & Fitness Trackers
TomTom Multi-Sport GPS Watch
Sports watch with waterproof treatment; PFAS risk unclear without transparency.
TomTom does not publicly disclose PFAS use or avoidance in this GPS watch. Waterproof polymer coatings may contain PFAS, but brand silence prevents assessment.
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
plastic/elastomer case with waterproof coating
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 TomTom Multi-Sport GPS Watch uses a plastic/elastomer case with a waterproof coating treatment. Waterproof coatings on sports watches typically employ fluorinated compounds (PFAS-class chemicals) to repel water and sweat, though TomTom has not publicly disclosed the specific chemistry. The elastomer strap material may include additives like plasticizers or UV stabilizers, standard for durable wearables but not itemized in available product literature.
The brand's record and disclosure
TomTom has not issued public statements on PFAS use, chemical safety testing, or material certifications for this model. The brand does not maintain a visible chemical transparency policy comparable to some outdoor gear manufacturers. No recalls, contamination incidents, or third-party safety controversies have been documented for this specific product line.
How it compares in its category
Most GPS sports watches (Garmin, Suunto, Polar) use similar plastic-elastomer construction with waterproof treatments; few brands disclose fluorinated compound use. TomTom's lack of transparency is typical for the category rather than exceptional. Competitors rarely publish independent testing for leachables or coating degradation, making direct comparison difficult.
If you buy it
Rinse the watch with fresh water after saltwater or heavy sweat exposure to minimize salt-driven coating wear. Avoid prolonged exposure to direct heat (above 50°C or 122°F) or harsh solvents, which may degrade the waterproof layer. Replace the elastomer strap if visible cracking or material softening occurs, as deterioration can expose underlying plastic. Store dry and away from sunlight to extend waterproof integrity.
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.”
Waterproof coating degradation over time
The fluorinated waterproof treatment (likely PFAS-based, unconfirmed) may shed or degrade with use, especially after saltwater exposure or UV aging. No published data on TomTom's coating durability or particulate release during wear.
Elastomer strap plasticizers and additives
Elastomer straps typically contain phthalates or alternative plasticizers for flexibility; TomTom does not disclose strap chemistry. No recalls or contamination reports exist for this model, and direct skin contact is minimal.
Plastic case leaching from thermal stress
The plastic housing could theoretically release additives if exposed to sustained heat above typical use conditions. No documented incidents for TomTom sports watches, and normal wrist-worn use remains well below stress thresholds.
Lack of chemical disclosure and testing transparency
TomTom does not publish third-party material testing, certification standards, or waterproof treatment chemistry. This opacity prevents independent verification of coating composition and long-term safety profiles.
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.