Oura Ring 4 Ceramic Smart Ring with 8-Day Battery

Preocupacion baja de PFAS

Veredicto: Comprar

Ceramic core lowers PFAS risk, but coating composition unconfirmed.

Oura Ring 4 uses ceramic as primary material, which is inherently PFAS-free. However, the exact composition of any surface coatings or treatments is not publicly disclosed by Oura (note: product is Oura brand, not Apple).

Material: Ceramic coating with titanium, stainless steel band

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