Samsung · Waterproof Smartwatches & Fitness Trackers
Samsung Galaxy Watch Ultra (2025) Titanium LTE 64 GB Display
No public PFAS disclosure; waterproof coating likely used but unspecified.
Samsung does not publicly disclose PFAS content or water-resistant coating chemistry for this smartwatch. Waterproof electronics commonly use fluorinated compounds, but no lab data or brand commitment available.
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
Titanium case, AMOLED display, unspecified water-resistant coatings
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 Galaxy Watch Ultra uses a titanium case, which is biocompatible and does not leach toxic metals under normal skin contact. The AMOLED display contains no known hazardous elements in the pixel materials themselves. The critical unknown is the water-resistant coating applied to protect internal electronics; Samsung has not publicly specified whether this uses PFAS-based hydrophobic treatments, a common industry practice for diving watches rated to 100m depth. Adhesives and internal sealants are also unspecified.
The brand's record and disclosure
Samsung does not maintain a public PFAS elimination commitment comparable to outdoor gear or apparel brands, nor does it disclose coating chemistry for its wearables. The company has faced criticism from environmental groups over opacity in supply chain transparency but has not faced significant health-related recalls for smartwatch materials. Samsung's standard practice with premium watches (Galaxy Watch lineup) involves water-resistance testing but minimal material disclosure to consumers.
How it compares in its category
Titanium smartwatches are considered safer than stainless steel options because titanium avoids nickel leaching, which affects nickel-sensitive wearers. Most smartwatches in this price tier (premium/sports segment) use similar AMOLED technology with no material advantage. The lack of PFAS disclosure is standard across the smartwatch category, including Apple Watch Ultra and Garmin offerings; no major competitor publicly commits to PFAS-free coatings in wearables.
If you buy it
Rinse the watch with fresh water after saltwater or chlorine exposure to prevent coating degradation and salt accumulation under the band. Do not expose it to extreme heat (saunas, boiling) as adhesives and seals may fail at sustained temperatures above 60C. Replace the band if skin irritation develops; nickel and azo-dye sensitivity is rare with titanium but possible with non-OEM band materials. Clean under the band weekly to prevent bacterial growth from sweat and moisture.
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.”
Undisclosed waterproof coatings (likely PFAS-based)
Titanium watches rated to 100m typically use Teflon-family coating hydrophobic treatments, but Samsung provides no specification. No testing or complaints on record for this model, but coating longevity and eventual wear-particle shedding into skin/environment is unmonitored.
Nickel in internal components or solder
Titanium case itself does not leach nickel, but internal stainless steel components and electronic solder joints remain unspecified. Risk is low for standard use but relevant for individuals with diagnosed nickel contact dermatitis.
Adhesive and sealant off-gassing
No volatile organic compounds (VOCs) have been reported from Galaxy Watch wearers; however, adhesives used in case assembly are not disclosed. Typical smartwatch adhesives are low-VOC but may release trace compounds if watch is exposed to sustained heat.
Band material allergens (if non-OEM)
OEM fluoroelastomer or silicone bands are low-risk, but third-party bands may contain azo dyes, formaldehyde resins, or latex. Skin contact is prolonged and occlusive, increasing absorption risk if low-quality materials are used.
Display glass or screen coating durability
Gorilla Glass on AMOLED screens does not leach; however, anti-reflective or oleophobic coatings on the surface are not specified. These are typically harmless but may degrade with prolonged salt/chlorine exposure.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 35% 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.