Helio Smart Ring Health Tracker vs QRNT Original Smart Ring with Health Tracker: 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 QALO.
• We flag Silicone leaching (oligomers/cyclic siloxanes), Nickel release from stainless steel and Bacterial and fungal growth in band crevices on the QALO and not on the Amazfit.
• The Amazfit is Titanium alloy case, polymer band where the QALO is Titanium, stainless steel, and silicone core, 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.
• We are less certain about the Amazfit grade, at 35% confidence against 72%, because it discloses less.