Epson · Waterproof Fitness Trackers & Cases
EPSON SF-810B GPS Watch
No coating described, and no PFAS statement from the brand.
The product information we reviewed describes plastic/elastomer case, glass face, stainless steel 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
Plastic/elastomer case, glass face, stainless steel 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.
Nickel leaching (stainless steel band)
Stainless steel bands can release small amounts of nickel through prolonged sweat contact if the plating or passivation layer is compromised. Risk is low with the 810B's typical stainless steel; individuals with nickel sensitivity should monitor for skin irritation at contact points.
Bacterial or mold growth in seals
Any waterproof watch with gaskets can accumulate moisture in seal cavities if not rinsed and dried promptly after water exposure. This is a maintenance issue, not a material hazard; regular cleaning prevents problems.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Elastomer/plastic off-gassing
Silicone or polyurethane elastomer bands and cases used in wearables do not off-gas volatile organic compounds (VOCs) under normal skin-contact temperatures. No reported cases of irritation or odor linked to the SF-810B or similar Epson models.
BPA & bisphenols
The plastic or elastomer case and buttons do not contain known BPA or phthalate-based compounds based on industry standards for wearables. Even if present in trace amounts, skin contact with a rigid case minimizes dermal absorption.
Source, FDA ↗Coating degradation and leaching
No protective coating on the case, band, or lens is documented. The materials themselves (bare plastic, glass, stainless steel) do not degrade in ways that produce toxic leachates during normal use or aging.
The full breakdown
What it's made of and why it matters
The SF-810B case is plastic or elastomer (rubber-like polymer), the display is glass, and the band is stainless steel. Plastics and elastomers used in wearables are typically polyurethane, silicone, or polycarbonate; these do not leach BPA or phthalates under normal skin contact and temperature exposure. Glass and stainless steel are chemically stable and do not off-gas or migrate into sweat or water. The low surface area relative to body contact and the absence of coatings reduce any leaching risk further.
The brand's record and disclosure
Epson has not published a specific PFAS statement for the SF-810B or its wearable line. This is typical for consumer electronics makers and does not indicate a known violation; it reflects an industry pattern of limited transparency on intentional chemical use in seals and coatings. No recalls, safety alerts, or established safety controversies have been recorded for this model. Epson does maintain ISO 9001 quality and manufacturing standards, but cosmetic or environmental claims are not routinely third-party verified for fitness watches.
How it compares in its category
Waterproof fitness watches typically rely on gasket seals and case design rather than chemical coatings to achieve water resistance; the SF-810B's plastic/elastomer construction is standard in this segment. Comparable devices (Garmin, Suunto, Apple Watch Sport) use similar material combinations. Stainless steel bands are more durable and less prone to off-gassing than coated aluminum or plastic bands, positioning the SF-810B as typical to slightly better in material selection. No safety advantage or disadvantage relative to mainstream competitors is evident.
If you buy it
Rinse the watch with fresh water after saltwater or chlorine exposure to prevent corrosion of the stainless steel and degradation of gaskets. Avoid prolonged exposure to temperatures above 60C (140F), as elastomer seals can lose integrity. Replace the band if cracks, peeling, or discoloration develop, as this indicates seal compromise. Clean the case junction and glass periodically with a soft, dry cloth to maintain the waterproof seal and prevent mold growth in seals.
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
- Epson 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.