Ultrahuman · Waterproof Smart Rings & Bands
ULTRAHUMAN AIR-Smart Ring Health Tracker Sleep & Fitness Tracker
Waterproof smart ring with undisclosed coating; PFAS risk unclear.
Ultrahuman Air uses titanium alloy with unspecified waterproof treatment. No public PFAS claims or third-party testing available. Coating composition unknown.
The safe swap
Fitbit
Oura - Ring 5 - Smart Ring - Size Before You Buy with OR5 Sizing Kit - Size 11 - Silver - (2026)
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 alloy body, unknown waterproof coating
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 Ultrahuman Air uses a titanium alloy body, which is biologically inert and does not leach metals under normal skin contact. The critical unknown is the waterproof coating applied to achieve water resistance; manufacturers typically use either silicone-based hydrophobic layers, polyurethane, or Teflon-family coating coatings, and Ultrahuman has not publicly disclosed which. Teflon-family coating coatings often contain PFAS, but this is not confirmed for this specific product.
The brand's record and disclosure
Ultrahuman has not published material safety data, PFAS avoidance statements, or third-party certifications for the Air ring. The company has maintained silence on coating composition and waterproofing chemistry despite the product's skin-contact application and the rising consumer interest in PFAS in wearables. No recalls or safety controversies have been publicly documented for this product line.
How it compares in its category
Smart rings in this segment (Oura, Samsung Galaxy Ring) similarly use titanium or similar alloys with undisclosed waterproof coatings, so disclosure opacity is industry-standard rather than unique to Ultrahuman. Oura has made limited PFAS commitments; Samsung has not. The Air is among the lower-cost options, which may correlate with less rigorous material vetting. Battery and sensor durability in wearables typically outlast coating integrity over 2-3 years of use.
If you buy it
Avoid prolonged exposure to saunas, steam, and chlorinated pools, as heat and chemicals can degrade unknown coatings and increase leaching risk. Rinse with fresh water after salt water or sweat exposure to minimize chemical attack on the waterproof layer. Inspect the ring monthly for visible wear, discoloration, or peeling; discontinue use if the coating shows signs of breakdown. Request material safety documentation from Ultrahuman directly; consumer pressure for disclosure may accelerate transparency.
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.”
Waterproof coating composition (unknown)
The coating is not publicly specified; if Teflon-family coating-based, PFAS presence is likely but unconfirmed. Thermal stress (sauna, dishwasher) may degrade the coating and increase any leachate.
Allergic reaction to coating or adhesive
No allergic incidents have been reported for this product. Titanium itself is hypoallergenic, but coating additives or adhesives used in assembly are undisclosed and could theoretically trigger contact dermatitis in sensitive users.
Microabrasion and particulate ingestion from coating wear
As wearables experience friction against skin and clothing, coatings can flake microscopically. The safety of inhaling or ingesting coating particles is unknown and would depend on coating chemistry.
Battery leakage or electrolyte exposure
Not specific to this product; relevant to all smart rings with internal batteries. No recalls have been issued for the Air. Proper disposal at end of life is important to prevent heavy metal or electrolyte contamination.
Heavy metals in electronics (solder, components)
Titanium exterior is safe; internal electronics (sensors, solder joints) may contain lead or other heavy metals per industry standard. Direct skin contact is minimal, but manufacturing and disposal pose environmental risk if not managed by certified recycling.
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
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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.