Xiaomi · Waterproof Fitness Trackers & Cases
Xiaomi Redmi Watch 5 Active Smartwatch
No coating described, and no PFAS statement from the brand.
The product information we reviewed describes plastic case, glass display, stainless steel band, 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
Plastic case, glass display, stainless steel band
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.
Plastic degradation and microplastic shedding
Plastic cases can degrade under UV exposure and thermal stress over 2-3 years of use. No specific data exists for this model, but normal wear may shed microscopic fragments; risk is low if the case remains intact.
Battery leakage and electrolyte exposure
All lithium-ion batteries carry a small risk of leakage if damaged or exposed to extreme heat. The sealed design of this watch minimizes this risk under normal use, but physical damage or submersion beyond the rated depth may compromise the seal.
Adhesive outgassing or skin contact irritation
Adhesives used to bond the case and band together may release volatile organic compounds (VOCs) in the first weeks of use, particularly if the device is stored warm. This is usually mild and resolves within days. No specific data exists for this model.
Nickel or cobalt allergy from stainless steel band
Stainless steel bands can contain trace nickel (typically under 0.5%), which may trigger contact dermatitis in sensitive individuals. This is a material property of stainless steel, not a manufacturing defect, and affects a small percentage of wearers.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Heavy metals
No analysis has been published documenting heavy metal contamination in the Redmi Watch 5 Active display or internal components. Glass displays typically do not leach; internal solder may contain lead, but this is not a skin contact risk in a sealed device.
Source, FDA ↗The full breakdown
What it's made of and why it matters
The Redmi Watch 5 Active uses a plastic case (likely ABS or polycarbonate polymer), a glass display, and a stainless steel band. Plastic cases in wearables are generally stable under normal skin contact and light sweat exposure because they are not designed to leach into food or liquids. Stainless steel bands are inert and resistant to corrosion from sweat. The glass display is chemically inert under normal conditions.
The brand's record and disclosure
Xiaomi has not published formal safety disclosures or third-party certifications specifically for this smartwatch model regarding material composition or chemical safety. The brand maintains a mixed track record on transparency, some products carry CE and FCC compliance markings, but material safety statements are rarely provided. No recalls or contamination incidents have been reported for this watch model in independent sources.
How it compares in its category
This watch is typical for its price tier and category. Most budget smartwatches use similar plastic cases and stainless steel or silicone bands without reported chemical hazards. Higher-end models (Apple Watch, Garmin) offer similar material choices but with more detailed safety documentation. The risk profile is comparable to other affordable fitness trackers in this category.
If you buy it
Rinse the band regularly with fresh water after sweat exposure to prevent salt and skin oil buildup, which can cause minor skin irritation rather than chemical leaching. Avoid prolonged exposure to temperatures above 50°C (122°F), which may degrade adhesive seals inside the case over time. If the case develops cracks or the band develops visible wear, replace it to prevent water ingress. Store in a dry place and charge regularly to maintain the sealed battery compartment.
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 fitness trackers & 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.