Citizen · Water-Resistant Smart Rings & Bands
Citizen Promaster Sea Silicone Watch Band
Silicone base likely lower concern with unspecified waterproof treatment.
Silicone band is naturally low-concern material. Citizen does not disclose waterproofing process or treatment details.
The better-graded swap
RingConn
RingConn Gen 2 Air Ultra-Thin Smart Ring
85/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Silicone watch band with water resistance
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
Waterproof coating composition (unspecified Teflon-family coating or similar)
Citizen does not disclose the chemical basis of the water-resistance treatment. If Teflon-family coating-based, PFAS exposure is possible; if other hydrophobic agents, risk is lower. Contact with skin is minimal for a watch band, limiting migration likelihood.
Skin irritation or allergic response to silicone or additives
Silicone allergies are rare but documented in sensitive individuals. This band's risk is low due to skin contact being temporary and external, but prolonged wear in warm/humid conditions could increase irritation risk for susceptible users.
Coating degradation and microparticle release over time
Water-resistant coatings can flake or delaminate with age, heat, or salt exposure. Risk of ingestion is negligible for a wrist-worn band, but degraded coatings may reduce water resistance and expose underlying silicone to wear.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Formaldehyde / VOCs
No public record of formaldehyde-based finishes or adhesives in silicone watch band manufacturing for this product. Silicone itself does not require formaldehyde curing, though adhesives joining band to case could theoretically contain trace resins.
Source, ATSDR ↗Lead
Silicone bands require minimal pigmentation and no plating; color additives in modern silicone are typically food-grade or cosmetic-grade pigments. No recalls or test failures on record for Citizen silicone bands.
Source, ATSDR ↗The full breakdown
What it's made of and why it matters
Silicone elastomer is a synthetic polymer backbone of silicon and oxygen atoms, chemically inert when cured properly. Unlike rubber or PVC, standard silicone does not require plasticizers like phthalates or BPA to remain flexible. Watch bands are low-contact, non-ingestible items worn on skin briefly each day, limiting migration risk even if leaching occurred. The water resistance treatment (likely a Teflon-family coating or proprietary coating) is the main unknown chemical factor.
The brand's record and disclosure
Citizen has no major public product safety recalls or chemical hazard controversies linked to watch bands. The brand does not publicly disclose PFAS use or treatment protocols for water resistance in silicone bands. Citizen holds some ISO standards and sustainability certifications for manufacturing, but transparency on per-product chemical composition is limited. No evidence of formal health warnings or third-party testing failures for this specific product line.
How it compares in its category
Silicone watch bands have lower concern for phthalates compared to older PVC bands and do not present the latex allergy risk of natural rubber. Metal watch bands carry potential nickel or lead concerns in plating; fabric bands may have formaldehyde resins or dye issues. Silicone's chemical stability and non-absorbent nature make it a lower-concern material for repeated skin contact, though waterproofing coatings are a variable across brands.
If you buy it
Rinse the band with fresh water after salt water or chlorine exposure to prevent salt crusting and material degradation. Avoid prolonged exposure to direct sunlight and high heat (above 60 degrees Celsius), which can cause silicone hardening or coating delamination over years. Replace if visible cracks, discoloration, or flaking of the coating develops, as these may indicate material breakdown. Clean with mild soap and water; avoid solvents, oils, or abrasive scrubbing that may compromise water-resistant coatings.
What we don’t know
- Basis
- Model estimate, 62% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Citizen has made none
Formulations change between production runs, so check the current label. How we grade.
More water-resistant smart rings & bands 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.