Smart Ring 3 Silver / 9#19.1mm / Standard with 1 Charging Case vs Helio Smart Ring Health Tracker: which is safer?

Where these two actually differ

• We flag Nickel leaching (from stainless steel components), Bacterial biofilm accumulation at skin interface and Allergic reaction to adhesives in charging case or band retention on the and not on the Amazfit.
• We flag Polymer band composition and residual monomers and Bacterial growth in sealed band-case junction on the Amazfit and not on the .
• The is Titanium alloy, sapphire crystal, stainless steel where the Amazfit is Titanium alloy case, polymer band, 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.