Xiaomi · Waterproof Smartphone Cases
Xiaomi Smartwatch Ip68 Waterproof Bluetooth Call Electrocardiogram Bp
No coating described, and no PFAS statement from the brand.
The product information we reviewed describes unspecified polymers, electronics, with no water-repellent coating named. Water resistance on products like this usually comes from the material and its seals rather than a surface treatment. The brand has published no PFAS statement for it.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Unspecified polymers, electronics
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Polymer degradation and microcracking
Unspecified polymers in wearables can degrade under UV light and repeated flex over 2-3 years. Micro-cracks may expose electronic components but are unlikely to release significant chemical hazards; risk is mainly functional failure or short-circuit risk during water immersion.
Battery leakage (internal)
Lithium-ion batteries in sealed wearables carry a very small risk of internal leakage if the device is crushed or dropped hard. This would not reach skin because the polymer housing contains the spill. Avoid high-impact drops and do not attempt to open the case.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Skin sensitizers in polymer additives
No recalls or reports of allergic contact dermatitis from Xiaomi smartwatch bands are on record. Standard wearable-grade polymers meet EU and US skin-contact safety limits, though individual sensitivities to plasticizers or vulcanization residues are always possible in susceptible users.
Heavy metals
Xiaomi smartwatches comply with RoHS (lead and cadmium restrictions) under EU/export standards. No documented heavy-metal contamination in the housing or band materials has been reported for this product line.
Source, FDA ↗Formaldehyde / VOCs
Wearable-grade polymers do not typically incorporate formaldehyde-releasing resins. Any minor off-gassing during manufacturing would dissipate long before the product reaches consumers; wearing time poses no inhalation risk.
Source, ATSDR ↗The full breakdown
What it's made of and why it matters
This smartwatch uses unspecified polymers for the case and band, combined with standard electronic components (circuit board, battery, sensors). The watch is sealed with an IP68 waterproof rating, meaning the housing gaskets and material thickness, not a chemical coating, provide water resistance. Polymer housings in wearables typically use polyurethane, silicone, or polycarbonate, none of which require additional surface treatments to meet waterproofing. The closed design means direct skin contact is limited to the band and back plate, reducing exposure pathways.
The brand's record and disclosure
Xiaomi has not published explicit material safety disclosures or hazardous substance statements for this product. The brand's broader electronics division has faced no major recalls or public health investigations tied to wearable coatings or leaching. As a consumer electronics manufacturer, Xiaomi operates under China's product safety standards and CE/RoHS compliance for export markets, but transparency on polymer sourcing or secondary treatments is not publicly available.
How it compares in its category
This smartwatch sits in the mainstream fitness-wearable segment alongside Fitbit, Garmin, and Apple Watch. Unlike some lower-cost alternatives, Xiaomi's build quality and waterproof engineering are well-regarded. Most competitors in this price range use similar uncoated polymer housings without hazardous additives. The IP68 rating (vs. IPX7 on some budget models) suggests better sealing, which indirectly reduces long-term wear and potential micro-cracking that could expose internal components.
If you buy it
Wearables contact skin daily; rinse the band and case regularly with fresh water, especially after sweat or saltwater exposure, to prevent irritant buildup rather than hazard leaching. Avoid prolonged direct sunlight storage, as polymer can become brittle over years. Do not submerge in hot water or expose to solvents (alcohol-based cleaners present lower concern in moderation). Replace the band if visible cracking develops, and discontinue use if skin irritation occurs in the contact area; this suggests either an allergy to the polymer itself or accumulated residue.
What we don’t know
- Basis
- Model estimate, 35% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Xiaomi has made none
Formulations change between production runs, so check the current label. How we grade.
More waterproof smartphone cases 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.