TomTom · Waterproof Smartwatches & Fitness Trackers
Hot tomtom spark music and cardio gps Top Sale TomTom Spark Music Cardio Small Watch Purple Haze Sportique
Waterproof sports watch; water treatment likely uses PFAS. No disclosure.
TomTom Spark is a GPS sports watch with waterproofing, which typically involves PFAS-based water-repellent coating treatments. Brand provides no PFAS transparency or certification.
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 casing with silicone band, waterproofed
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 Spark Music uses plastic casing (material type not publicly specified by TomTom) bonded to silicone elastomer for the sport band. Waterproofing in consumer sports watches typically relies on Teflon-family coating coatings or water-repellent coating (water-repellent coating) treatments applied to seams and gaskets, often PFAS-based compounds. Silicone itself is generally considered inert and low-toxicity, but the adhesives and waterproofing agents used in assembly are the chemical concern.
The brand's record and disclosure
TomTom has not published materials transparency reports, restricted substance lists, or PFAS-use statements for its consumer wearables. The company maintains no publicly visible sustainability or chemical disclosure policy specific to sportwatch manufacturing. No product recalls tied to chemical leaching or toxicity have been documented for this model. This silence is standard for the GPS-watch sector, but represents a missed opportunity for brand differentiation on safety.
How it compares in its category
Sports watches in this price and function tier (Garmin Forerunner, Fitbit Ionic, Apple Watch Sport) face identical PFAS-waterproofing questions because the technology is industry-standard. Few brands disclose their specific waterproofing chemistry. The TomTom Spark Music competes on features (music storage, heart-rate monitor) rather than material safety claims, putting it in the typical opaque middle of the market.
If you buy it
Avoid prolonged direct skin contact with the watch in hot environments (sweat + plastic/adhesive can theoretically increase volatilization of waterproofing residues, though documented harm is absent). Clean the band regularly with mild soap and water, and allow it to air-dry fully before wearing again to reduce microbial growth in the silicone and polymer pores. Replace the silicone band if it shows visible wear, cracking, or discoloration. Do not expose the device to intentional heat (dishwasher, sauna) despite waterproof rating.
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.”
Waterproofing chemical composition (likely PFAS-based)
Teflon-family coating or fluorinated water-repellent coating treatments are standard in consumer sports-watch waterproofing but not disclosed by TomTom. PFAS exposure from wearables is dermal contact; systemic absorption through intact skin is considered minimal by EPA, but chronic wearers and those with skin lesions carry unknown risk.
Plastic casing off-gassing or leaching (non-PFAS)
TomTom does not specify the plastic resin (ABS, polycarbonate, or other). Without material identification, generic risk of phthalates, BPA, or volatile organic compounds cannot be ruled out, but no recalls or toxicity complaints are on record for this model.
Silicone band degradation and microparticle shedding
Silicone bands can degrade under UV, sweat, and heat over months of use, releasing microparticles. Ingestion risk is low in wearables, but chronic dermal contact with degraded silicone may cause localized irritation in sensitive users.
Adhesive or sealant toxicity
Casing-to-band bonds and internal sealing adhesives are not disclosed by TomTom. Most modern sports-watch adhesives meet safety standards, but no third-party testing results are publicly available for this specific product.
Battery leakage or chemical contact with skin
Lithium-ion or rechargeable coin cells in sports watches pose risk only if casing is cracked or punctured, exposing internal electrolyte. No safety incidents are documented for the Spark Music; treat visible cracks as a replacement trigger.
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.