Circular · Waterproof Smart Rings & Bands
Seapoom Smart Ring Activity Fitness Tracker Sleep Tracker
Skip. Waterproof smartwatch with no PFAS disclosure available.
Smart rings typically use waterproof coatings or treatments to protect electronics, often containing PFAS. Circular provides no material transparency or PFAS statements. Insufficient data to assess risk.
The safe swap
Fitbit
Oura - Ring 5 - Smart Ring - Size Before You Buy with OR5 Sizing Kit - Size 11 - Silver - (2026)
85/100 safety
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Unspecified coated metal/plastic composite
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
Seapoom Smart Ring specifies only a 'coated metal/plastic composite' without material breakdown, which is a major red flag for a product worn directly on skin 24/7. The coating type, metal base (likely stainless steel or nickel-plated), and plastic composition remain undisclosed, making it impossible to assess leaching of metals or polymer additives. For a device marketed as waterproof, the stability of coatings under sweat, water, and friction is critical but unvalidated in public data.
The brand's record and disclosure
Circular (the brand behind Seapoom) has maintained silence on PFAS use and chemical composition despite manufacturing a waterproofing-dependent product. No third-party certifications (e.g., OEKO-TEX, RoHS compliance documentation) are publicly available for this model. The lack of transparency on materials is inconsistent with industry best practice for skin-contact electronics and suggests low priority on consumer safety disclosure.
How it compares in its category
Smart rings in this price/feature segment typically use similar unspecified coatings, but established competitors (Oura Ring, Samsung Galaxy Ring) publish material safety data sheets and certifications. Seapoom's complete absence of third-party testing or certification documentation puts it below the baseline transparency standard for wearables, where skin contact and 24/7 wear demand higher disclosure standards than, for example, smartwatches worn intermittently.
If you buy it
Remove the ring during intense sweating, prolonged water exposure (saltwater especially), or skin irritation to minimize leaching risk from the unknown coating. Store dry and avoid contact with lotions, sunscreen, or cleaning agents that may degrade the coating. Monitor for skin redness, discoloration, or rashes at the contact site. Consider replacement if visible coating wear or flaking appears, as the underlying metal becomes exposed.
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.”
Heavy metal leaching (nickel, lead, cadmium in coating or base alloy)
Metal composition is entirely unspecified; if the base is nickel-plated (common in budget rings), nickel leaching from sweat is a documented dermatological risk. No material certification provided to rule this out.
Coating degradation and unknown leachables
The 'coated' composite is described with no detail on coating chemistry. Degraded coatings on skin-contact products can release polymer additives, plasticizers, or pigments; durability data is absent.
Allergic contact dermatitis from metal or coating materials
Budget metal rings and uncoated/poorly-coated metals are common causes of skin reactions in wearables. The unspecified alloy and coating increase risk compared to rings with published hypoallergenic certifications.
Bacterial or fungal growth under seal or in charging port
Waterproof seals that trap moisture between the ring and skin can promote microbial colonization if the device is not removed and dried regularly. No maintenance or drying guidance is typically provided for budget wearables.
Electronic component leachables (solder, epoxy resin off-gassing near skin)
No public failure reports or testing of internal solder or epoxy outgassing in contact with skin have been documented for Seapoom rings, but material composition transparency is so low that this cannot be ruled out.
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 Smart Rings & Bands
Fitbit
Oura - Ring 5 - Smart Ring - Size Before You Buy with OR5 Sizing Kit - Size 11 - Silver - (2026)
Titanium and stainless steel with glass sensor
Lower concern smart ring; no PFAS-prone materials identified.
⚠Brand says nothing about PFAS
Fitbit
Qalo QRNT Slim Smart Ring
silicone elastomer with metal core
Smart ring with silicone body; lower concern but no public PFAS disclosure.
⚠Brand says nothing about PFAS
Withings
Black Smart Ring Size 9 - New Women | Color: Black
Titanium alloy ring with sapphire crystal display
Lower concern. Smart ring materials inherently unlikely to require PFAS.
⚠Brand says nothing about PFAS
More waterproof 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.