Xiaomi · Waterproof Smartwatches & Fitness Trackers
Redmi Watch 5 Active Midnight Silver - 18-Day Battery Life, 2-Inch Display, 140+ Workout Modes, 5atm Waterproof, Bluetoo
Smartwatch with unspecified waterproof treatment; PFAS risk unclear.
Xiaomi does not disclose material composition or PFAS use. The 5ATM waterproof rating suggests water-repellent coating, which often contains PFAS, but specific treatment is unknown. No third-party testing or PFAS-free certification available.
The safe swap
Swatch
Swatch Chrono 42 Quartz Watch
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
Unspecified watch body and coatings, 5ATM waterproof treatment
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 Redmi Watch 5 Active uses an unspecified watch body (likely aluminum or stainless steel) with an unidentified waterproof treatment rated 5ATM (water resistant to 50 meters, suitable for swimming but not diving). The display and internal coatings are not detailed by the manufacturer. Without disclosure of the specific waterproof coating chemistry, the PFAS content cannot be ruled out; many consumer smartwatch 5ATM ratings rely on fluorinated polymer coatings. The lack of material transparency is the primary concern here.
The brand's record and disclosure
Xiaomi has not publicly stated a position on PFAS avoidance or established third-party certifications for safer waterproofing alternatives. The company provides minimal material safety documentation for the Redmi Watch 5 Active beyond basic specifications. No major product safety recalls specific to this watch model have been documented in public databases as of available record. Xiaomi's general approach to chemical disclosure lags behind premium competitors, though no systematic contamination incidents have been reported for this device.
How it compares in its category
Budget smartwatches typically offer less transparency than premium brands; the Redmi Watch 5 Active is consistent with this industry norm. Comparable devices from Fossil, Garmin, and Apple generally provide more detailed material sourcing and chemical safety information. The 5ATM rating itself is standard for this price segment, but the coating remains unspecified across most budget options. This watch does not stand out as either a safety leader or a risk outlier in its category.
If you buy it
Avoid prolonged or high-temperature contact with skin if you have known sensitivity to synthetic coatings or metals. Keep the watch clean and dry between uses; saltwater or chlorinated water exposure should be rinsed off promptly to prevent degradation of the waterproof seal. Do not submerge beyond 50 meters or use in high-pressure water sports. If the waterproof seal degrades (indicated by fogging under the screen or water intrusion), discontinue use and seek replacement rather than attempting repair, as resealing introduces uncontrolled exposure risk.
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.”
PFAS in waterproof coating
The 5ATM waterproof treatment is unspecified; traditional smartwatch waterproofing often relies on fluorinated polymers (Teflon-type coating, PFC). Xiaomi has not disclosed whether fluorine-free alternatives are used, leaving PFAS presence plausible but unconfirmed.
Metal sensitization from watch body and nickel leaching
Aluminum and stainless steel watch bodies can degrade over time with sweat exposure; exact alloy composition is not disclosed. If the case contains nickel-bearing stainless steel (common in budget watches), prolonged skin contact may trigger contact dermatitis in sensitive individuals.
Coating degradation and microparticle release
The waterproof seal and any protective surface coatings may degrade with extended use, chlorine exposure, or salt water contact. Degradation risks exposure to underlying material particles or coating fragments, though the magnitude is typical for consumer electronics.
Lead or cadmium in pigments or solder
No recalls or test reports have documented heavy metal contamination in the Redmi Watch 5 Active. Standard electronics manufacturing in mainland China typically meets RoHS compliance (limiting lead/cadmium), but third-party verification for this specific model is not publicly available.
Off-gassing from adhesives or potting compounds
Internal adhesives and electronic potting materials could emit volatile organic compounds under heat stress, but sealed smartwatches generally contain these emissions. No field reports of odor, respiratory irritation, or chemical sensitivity linked to this model exist in public records.
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 Smartwatches & Fitness Trackers
Swatch
Chrono 42 Quartz Watch
Stainless steel case, mineral/plastic crystal, standard watch components
Lower concern. Standard watch materials pose minimal PFAS risk.
⚠Brand says nothing about PFAS
Swatch
SEA WASP
Plastic/resin watch case and strap
Typical consumer watch, no known PFAS risk signal identified
⚠Brand says nothing about PFAS
Swatch
Neon Seppia Big Bold Chrono Quartz Watch
Stainless steel case, plastic/resin band, mineral or acrylic crystal
Lower concern. Standard watch materials typically lack intentional PFAS use.
⚠Brand says nothing about PFAS
More waterproof smartwatches & fitness trackers 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.