TomTom · Waterproof Smartphone Cases
Hot tomtom spark music and cardio gps Top Sale TomTom Spark Music Cardio Small Watch Purple Haze Sportique
No coating described, and no PFAS statement from the brand.
The product information we reviewed describes plastic casing with silicone band, waterproofed, with no water-repellent coating named. Water resistance on products like this usually comes from the material and its seals rather than a surface treatment. The brand has published no PFAS statement for it.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Plastic casing with silicone band, waterproofed
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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.
Seal degradation and water ingress
Silicone gaskets and mechanical seals degrade over time with temperature cycling and UV exposure. Loss of waterproofing allows internal corrosion of electronics and potential skin contact with corroded metal components; not immediately hazardous but reduces product safety margin.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Silicone band sensitization or irritation
Medical-grade silicone is hypoallergenic and does not off-gas volatile compounds under normal wear. No contact dermatitis cases are established for TomTom wearables, though individual sensitivity to any elastomer is possible.
Plastic polymer leaching under temperature or mechanical stress
Polycarbonate and ABS housings do not leach BPA or phthalates under normal body temperature conditions. The rigid casing is not heated or flexed repeatedly in ways that trigger leaching.
Flame retardants
No documented brominated or chlorinated flame retardants are reported in TomTom sports watch casings. Injection-molded consumer electronics typically use mineral fillers or halogen-free additives, but TomTom does not disclose formulation.
Source, EPA ↗Formaldehyde / VOCs
Off-gassing from new plastic and silicone is minimal for sports watches because they are small surface-area devices and fully cured before sale. No odor complaints on record for the Spark Music.
Source, ATSDR ↗The full breakdown
What it's made of and why it matters
The TomTom Spark Music is a rigid plastic sports watch casing with an elastomer silicone band. The plastic housing is injection-molded polymer (likely polycarbonate or ABS) designed for impact resistance; the silicone band provides elasticity and comfort. The waterproofing comes from sealed gasket construction and tight mechanical tolerances rather than a chemical coating, so the material exposure is limited to the polymer substrate itself and silicone elastomer. Neither material class has a significant leaching profile under normal wrist-worn conditions.
The brand's record and disclosure
TomTom is a Dutch consumer electronics manufacturer with a clean record on sports watch safety; no product recalls or hazard disclosures are on file for the Spark Music line. The company does not publish material safety or ingredient data sheets for consumer wearables, which is standard industry practice for electronic devices. No PFAS-related statement exists from TomTom for this product, and no Teflon-family coating coatings are documented in publicly available specs.
How it compares in its category
This watch sits in the mid-range sports wearable category, comparable to Garmin Forerunner or Fitbit devices in terms of material safety profile. Consumer electronics wearables generally avoid hazardous coatings because they rely on mechanical sealing, not chemical water repellency. Sports watches across this segment have similarly low documented hazard rates, making the Spark Music representative of its class rather than an outlier.
If you buy it
Keep the watch dry when not in use and avoid prolonged immersion beyond its rated depth (typically 5 ATM for sports watches, suitable for splashes and shallow swimming but not diving). Do not expose to extreme heat (above 60 degrees Celsius or 140 Fahrenheit) as silicone bands can degrade at high temperature. Replace the band if cracks or material loss appear; this prevents water entry at seams. Clean with fresh water after salt water use to preserve seal integrity.
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
- TomTom 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.