Helio Smart Ring Health Tracker vs Bluetooth Ring 3.0 Pack Smart Digital Weight Control: 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 Silicone band skin contact and degradation, Nickel leaching from stainless steel, Anodized aluminum coating integrity and Microorganism colonization and biofilm on the and not on the Amazfit.
• The Amazfit is Titanium alloy case, polymer band where the is Stainless steel ring with silicone band, anodized aluminum electronics, 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.