Tracking Ring vs IMIKI Smart Ring: which is safer?
Tracking Ring is our pick: better on PFAS and on the overall hazard picture.
Our pick
Amazon
Tracking Ring
PFAS grade
A 100/100
Overall grade
A 92/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Stainless steel, titanium alloy, sapphire glass
Confidence
72%
PossibleNickel in stainless steel alloy
PossibleSkin irritation from prolonged contact
Xiaomi
IMIKI Smart Ring
PFAS grade
B 85/100
Overall grade
C 73/100
Verdict
Buy
Hazard flags
⚑ 3
Material
Titanium alloy body, likely stainless steel sensors
Confidence
72%
PossibleAdhesive or sealant off-gassing (VOCs)
PossibleSensor coating degradation (optical sensors or electrodes)
PossibleMicrobial biofilm accumulation (inner surface)
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More water-resistant smart rings & bands: see the full ranking