TomTom · Waterproof Fitness Trackers & Cases
Tomtom Multi-sport Gps Watch Model 8rgo With Charger Dock
No coating described, and no PFAS statement from the brand.
The product information we reviewed describes polymer resin case, elastomer band, 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
Polymer resin case, elastomer band
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.
Polymer case degradation and microparticle shedding
Over 3-5 years of heavy use, injection-molded polyamide can develop stress cracks or surface wear. Degraded polymer fragments are not systemically toxic but may be ingested in small amounts through hand-to-mouth contact, particularly in children.
Elastomer band UV and ozone degradation
Elastomer bands degrade when exposed to prolonged sunlight, salt spray, or chlorine. Degradation does not typically release toxic compounds but may reduce band integrity and flexibility; cosmetic breakdown is the main concern.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Metal components and nickel plating (charger dock)
The charger dock contains metal contacts. No information is available on whether contacts are nickel-plated or bare copper. If nickel-plated, contact dermatitis is theoretically possible with prolonged skin contact, but watches are not worn on the dock.
Sealed housing and bacterial growth
The watch case is sealed for water resistance. If moisture enters through a compromised seal, bacteria or mold could grow in the internal cavity, but this is a design failure, not an inherent material hazard.
Formaldehyde / VOCs
Cured polyamide and engineering thermoplastics do not typically off-gas formaldehyde. Formaldehyde is used in resin manufacturing but is fully reacted and bonded in the finished product.
Source, ATSDR ↗The full breakdown
What it's made of and why it matters
The TomTom Runner 8rgo uses a polymer resin case and elastomer (rubber-like) band. Polymer resin cases are injection-molded engineering plastics, typically polyamide or similar thermoplastics, chosen for durability and lightweight properties in sports watches. Elastomer bands are inherently waterproof and flexible, avoiding the need for coatings or adhesives that could leach chemicals. No glazes, enamels, or ceramic coatings are involved in this design, eliminating several common wear-surface hazards.
The brand's record and disclosure
TomTom has not published a formal PFAS avoidance or safety disclosure statement for this product line. The brand does not appear to have faced major product recalls or chemical contamination incidents tied to Runner/Spark watch models. TomTom's transparency on material sourcing and chemical screening is minimal compared to leading outdoor gear brands, but the absence of reported issues suggests baseline manufacturing compliance with consumer product regulations.
How it compares in its category
Polymer-cased sports watches are the industry standard and generally lower-risk than metal-case alternatives (which may have nickel-plated finishes or solder joints). The elastomer band is more stable than silicone (which can degrade and shed microparticles over years of UV exposure), and avoids leather or treated textile bands that may carry formaldehyde or azo dyes. Within budget fitness trackers, this material choice is typical and represents a mid-risk profile.
If you buy it
Avoid prolonged exposure to direct sunlight when not wearing it, as elastomer can harden or crack over extended UV exposure. Do not expose the watch face or band seams to extreme heat (above 60 degrees Celsius / 140 Fahrenheit) or harsh solvents, which may degrade the polymer or seal integrity. Rinse the band with fresh water after salt water use and inspect seals annually for signs of wear. Replace the band if cracks, peeling, or discoloration appear, as degraded elastomer may shed microparticles.
What we don’t know
- Basis
- Model estimate, 35% 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 fitness trackers & 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.