Helio Smart Ring Health Tracker vs Smart Ring 3 Standard with 1 Charging Case: which is safer?

Where these two actually differ

• We flag Polymer band composition and residual monomers and Bacterial growth in sealed band-case junction on the Amazfit and not on the .
• We flag Unspecified coatings on titanium/steel body, Charging case polymer identity and additives, VOC or odor off-gassing from case on unboxing and PFAS in coatings or case flame retardants on the and not on the Amazfit.
• The Amazfit is Titanium alloy case, polymer band where the is Titanium and stainless steel body with unspecified coatings; charging case likely polymer, which is most of the difference in these two grades.
• These two are level, close enough that price and fit should decide it rather than our grade.